Are you wedded to the idea of a 2 story great room? That's alot of unused space on the 2nd floor right there. 2 story rooms like that can be hard to heat/cool, and can also make the 2nd floor noisy. (Think about watching a movie after the kids, if you have them, are in bed. And if you plan to add a surround sound system, think about where the speakers will go and how close to the 2nd floor bedrooms they'll be.) OTOH, the laundry room and closet by BR 2 and the closet and bathroom by BR4 will help block noise from the great room. I really like the size of your secondary bedrooms. My DS's room is only about 12x13 or 12 x 14. He just turned 13 and is already 6' tall, so we got him a full size bed to replace his old twin size. It's kind of tight in the room now with the bed and his other furniture. The point of telling you this is that if you have young kids now, before you know it they could be outgrowing their current furniture! Sorry I don't have other suggestions. There's alot I like about your plan.

E, here's my criteria for kitchen design; I hope it's helpful in your case. --The kitchen triangle still works and makes sense, so plan you kitchen to maximize the work triangle (this means, among other things, don't stick a humongeous island the size of the USS Ronald Reagan in the middle of the triangle); --Refigerator and pantry belong together, since that's where a lot of the food prep starts; --The refigerator and pantry should be oriented close to where the food arrives from the grocery store after purchase; --Sink and dishwasher belong side by side, with the dishwasther closest to the dining area; --Cooking may vary from a single drop-in range/oven to a seperate cook top and seperate oven(s)/microwave; --Whatever the cooking arrangement is, keep the cooking units close to one another (in the triangle); --Cooktops need ventilation, and the most effective is a hood above the cooktop that is at least 6" wider than the cooktop on either side (a lot more can be said about hoods, including CFM, location of exhaust fan, duct size, etc); --Cooktops create grease, so plan the adjacent backsplash and wall finishes accordingly (that wonderful detailed tiled wall may soon have the grout lines darkened with grease, depending on what and how you frequently cook) --Provide space for the number of people expected in the kitchen at the same time, i.e., 4'-0 is the minimum space for one person to open a cabinet or refrigerator door. If you expect more than one person at a time in the kitchen, increase dimensions in that area to 5'-6' minimum --Storage: decide where the kitchen-related storage should be and where the dining-related storage should be and put each there! That's why the old "Butler's Pantry" was and is a good idea when it comes to storage. Hope this helps. Good luck on your project!

To me, the floorpan seems to make sense as it is. You could extend the bath slightly into the bedroom to give you a longer countertop space, about where the wall of bedroom2 runs, but you need to know if that works with your bedroom furniture. You could also slide the shower over to the back part of your closet, accessed from the shorter end, to slide to toilet down and have more countertop. It depends on your priorities.

The walls between the garage and the house are usually fire separation walls with fire separation doors for entrances into the house from the garage. If you are rebuilding your garage walls, you may want to upgrade the walls. Also, there is sometimes a step up from the garage into the house to contain noxious fumes and water in the garage (usually that's where the water heater is). Keep the step if it's already there. Also, to go in and out of the pool area and lanai, you have to go through the dining room? I don't think that's a great idea. Just an aside, with small girls in the house, you may want to conceal the access to the house through the third bathroom, especially if Bedroom 1 is usually empty. It's nice to have the third bathroom when swimming, but consider alarming this door for other times.