If you are set on this design, I would move the laundry door to the kitchen so that wall does not get chopped up looking from the kitchen. You also want to push out the door to be flush with the frig and oven. This will make the inside of the laundry room a bit odd but you want the esthetics from the kitchen not from the laundry room. I would play with the placement of the door into the laundry room. Bottom left of the kitchen may work where there is already an odd jog in the laundry room. You will lose straight shot out to the back door from the kitchen, however. I would consider island seating such that you are facing out the window while eating if you have east facing window/sliding glass door. I think you have enough room. It is wonderful to eat breakfast while looking out to the morning light! I would rid of some of the uppers and lighten the space a little. The cabinet design is too filled in and heavy, IMHO. In your pictures, there does not seem to be a good way to get from the upper deck to the lower pool. Is that a possibility? You really want to be able to acess the pool and your wonderful backyard from your kitchen. Otherwise, you have to maintain two kitchens in the summer. (been there and done that, and it is a PITA!) I have a house where our upper deck does not connect to the lower level. This is the WORST design about our house! I speak from experience... We don't have enough lot to make it happen being in the city. There are always limitations to the houses we live in.

I like my first idea best as far as use of space. I know people say not to put toilets on an outside wall. We had one in our last house in Iowa, but we had 2X6 construction. I don't know how high your window is, but I'm guessing the toilet would fit under there. The shower would be 5 feet long or shorter if you want a wider space to get to the toilet. (kind of tight the way I have drawn). You could do a 5 and half foot long shower and do an angled door at the left end to allow room between the shower and toilet. The vanity would be about 7 feet long, unless you do a 60 inch vanity with a linen cabinet at the door. I would reverse entry door swing if you do that.. The second top right could work and you would still have a small closet. The bottom left plan would require waterproofing your front window. Hopefully someone will give you other ideas. The bottom right plan is bigger, but no closet. Each square equals 1 foot.

"The architect doesn’t like Jack & Jill bathrooms." I do not care for Jack and Jill bathrooms because of the lack of visual privacy, lack of sound privacy, and lack of physical privacy. Some time in the future when adult guests use the bedrooms the "lacks" will be amplified. If both daughters want there own sink, why not give them their own toilet and shower. An en suite is a very good solution. There may be times when they make sense, but it is usually for a short period of time.

The refrigerator will not work in that location as you show it. It will need approx 12" between the wall and the refrigerator to allow the doors to open fully for both full access and removal of bins & shelves for cleaning. Will you have another Living/Family Room elsewhere? I don't think you will have room for both a Living Room & Dining Room in that relatively small space. The Dining "space" will need at least 6'3" (assuming a 39" deep table, a bit shallow, but if you're not tall and don't have long legs, workable). Then, you will need around 4' between the table and sofa. That leaves you with a 10-foot deep Living Room. That would make the Living Room 11'9" x 10'. Maybe that's big enough for you? You will also need 5' between the island and the table, assuming seats at each location. Island...The island should be 41.5" deep -- 1.5" overhang in the front + 24"D cabs + 1" decorative doors/end panels + 15" overhang = 41.5". (15" is the minimum seating overhang for short to average height people.) Kitchen aisles...You should have at least 42" between the counter on the island and the counter on the sink wall. Ditto between the range and the counter on the island. (42" is the minimum aisle for a one-person Kitchen. If two or more people will be working in the Kitchen, then 48" is the minimum. Aisles are measured to/from the items that stick out into the aisle the farthest. In your layout, aisles appear to be incorrectly measured cab-to-cab. That means you're missing a minimum of 1.5" on each side. Cabinet measurements only include the box, they do not include the doors/drawer fronts (1" more) or the counter overhangs (1.5" more). A cab/counter run that does not include any appliances that stick out past the counters is 25.5" deep.