I think I'd want to move the door to the deck from the master to the other end of the same wall. This way you have at least one area to place the bed and night stands that is out of a walking area and not having to walk around the bed as I'm assuming you will be placing the head of the bed against the great room as I don't really see another wall that has the space. I'd also want to make sure I got the wall between the great room and the master sound proofed. I assume your stairs are going down so you might be able to use some of the space at the end of them to cover and use as a pantry. I'd also enlarge the mudroom area so you actually can be more than one person in that space. The way the door opens there it makes for an odd and tight space for use by more than one person at a time. As others mentioned post the kitchen on the kitchen forum with better dimensions. I would also do an excercise of how you plan to place furniture in your plan to make sure you have enough space for what you want and to catch any walking paths and flow issues such as door swings, window placements, enough clearances to walk past without having to take a detour. For example how will you place furniture in the great room and also be able to have somebody walk through it to get to the kitchen etc. without walking in front of somebody watching TV or walking in between a group having a conversation. You'll need some sort of hallways created by furniture arrangement and you'll want to make sure they work as you intend them to.

I knew a lady who had a 'Formal Room'. Her house was known, locally, as "The Castle", and was a Tudor dating from 1925. Anyway, the 'Formal Room' was a large walk-in closet next to the kitchen, where, when the maids weren't doing anything else, they could go and get a 'Formal' (party dress/evening gown), and "iron-on-it" for awhile. The lady's daddy had owned a beer joint, but she'd been Miss-something-or-other, and had snagged the richest boy around. It was real smart of her to have 'The Formals' where the maids could grab one, when the Lady of the House, or her Daughter, called from upstairs, or from the Country Club, and said, "Vinah! Git me thaaayit blue Dior ready. Wuhrrr goin' ta thuh University Club tanite!", or "Git me up some formals, Queen Esther! Tha inlaws are flyin' us up ta thuh KENtucky Derby." That 'Formal Room', now that you've jogged my memory, was probably the house's original Pantry, and is roughly the size of YOUR pantry. In fact, your house is roughly the same size as 'The Castle'. And its facade seems about as complex and expensive-to-build as 1920s Tudor architecture. Yours is a HUGE, luxurious house, by most people's standards. So, I'm baffled as to why the dining table is relegated to a 13'x13' 'Dining Area' off the Kitchen. I'm guessing you're in someplace like Northern Michigan, where people are very unpretentious. But still, there seem to be a lot of people in your life, and jamming them all into that little space, when food seems rather important in the scheme of things (the well-developed kitchen... the large pantry....) would seem to potentially make for tense and unpleasant meals, when the whole family is together. We recently moved back South, when it turned out we'd taken over another corporation (honestly, I didn't mean to...), and someone was offering us too much money on our almost-complete house outside Portland, and somebody else took our lowball offer on a silly, overgrown "Old-South-Style-Dream-Home" (on considerable acreage, with millions in landscaping and embassy-style electric fencing that we were getting basically for-free). As much as I hate Mississippi, all those tempting numbers made the move back home impossible to resist. So, here we sit. This house had the typical tiny, prissy little Dining Room, just big enough to hold the previous Owner's "Mamaw's (Grandma's) Mahogany Dining Set from Montgomery Ward" (C. 1957). The space was too small. It became my husband's Library. Stretching across the back of "The Gracious Mansion" was some bizarre free-flowing conglomeration of space, that was a den/great room... something... I had that space gutted before I even let my Decorator in the door. Didn't want to give him a cerebral hemorrhage... and it's cheaper to let your design team know the raw dimensions from the get-go. They're going to come in and take measurements, and photograph every stub-up and framing anomaly... So I had studs, sub-floor - tutto - sprayed in white primer, before they arrived. Well, I had sold our Portland house before I was able to use my custom table built for 30. But that table (and a kitchen designed for caterers) turned out to have made the house irresistible to my Best Friend's Daughter, who ONLY entertains formally, and otherwise has meals across the meadow at her Parents' house. I have a history of selling my houses to pairs of surgeons. These particular surgeons, despite their youth, paid cash. Seems they'd each been letting their trust incomes pile-up while they were in residency. Good kids. So, here, in my newly-acquired bargain manse, I wanted the same thing: long table, with three big chandeliers overhead... lots of sconces, mulberry silk shades for really soft lighting... but with a big, long buffet, because this IS the South, and we ALL dine buffet-style. In Portland, caterers and rent-a-butlers are fun people. In Mississippi, they're failed actors and musicians, and are bitter, spiteful little bundles of passive aggression. And anyway, everybody at our table here, even when there are 30, are 'family' in some way, and the Caterers really don't need to overhear whatever schemes we're hatching, or whatever dirt we're dishing. Although we use fancy plates and fancy goblets and Whiting's 'Lily' flatware from 1902, we DON'T DINE FORMALLY. Everybody's too busy, and it's basically an open-house-in-the-Dining-Room: arrive at some approximate hour, grab a plate, leave whenever... But the table seats an easy 30 (three feet for each person), with blazing chandeliers overhead, and my favorite ancestor, a banker from Riga, glowering over everybody, from the center of the longest wall. It's a practical room: brick herringbone floors that can be mopped with strong soaps; fractionally non-parallel walls for better accoustics; embossed velvet 'papering' the walls, for even better accoustics; a tented ceiling where it once 'cathedraled', for soaking-up our family's cacophony; sturdy chairs, and a sturdy table... And "immediate family", for us, can easily fill the room. We totally fill up the room with people, at least once a week. I'm thinking that you're happy 'Yoopers' (or some sort of Central European/Alpine types, in a snowy part of America) with none of our Southern pretensions or obsessions. But still: wouldn't you be able to use an old-style English 'Long Room', with a long, rugged refectory/trestle table (a long, narrow, rustic table), in a more expansive space? A refectory table can be used for reading, computing, etc., when not used for dining. What I see on those plans just seems like the 'kitchenette' in a 1950s tract house... a tract house that just grew and grew. Your house is the size of a MANSION, but the dining area is like a breakfast nook in Levittown.

What does your family like to do? Would it make sense to set the dining room up as a game room? Or a library? FWIW, I'd be tempted to either move the door to the guest bath to the hallway or add a second door there, because it would make that bathroom easier for guests to access, and it would put a guest bath on the first floor in a more public area (there may be times you'd rather not have guests in your mudroom). I'd be inclined to put the TV in the study (unless you plan to use that as an office). My kids hardly watch TV on the TV anyhow (they prefer the tiny screens of their little devices).

That's a very good layout. These 'guest' rooms are going to be for family members on occasional weekends? If these rooms are only going to be used once and awhile, I don't see any reasons to change the sizes.