I changed color to red to show / see how the two bedrooms upstairs might work out. The concept for those bedrooms is basically for guests or grandchildren. I don't follow residential design closely enough to know whether it is 'de rigueur' that every bed room has its own bath, but that is where I am heading. Costs could get in the way, but it seems like a good starting point.
If the Garage were completely shown, the socket for the entrance to the house might seem too much. On the right lot and neighborhood the garage doors could end up facing any one of three directions.
The MBR is way off in scale. I would like for it to extend past the kitchen so that it might share a patio that I envision being on that side. I have done decks; I have one now. I've never had a patio, but it is hard to imagine that it wouldn't beat a deck all to hell.
The most problematic thing I can see is that the kitchen/pantry/laundry, while having the relationship I want, are going to make access to the MBR finicky. Hopefully the next iteration will scare up some options to explore.
I like the Office location. Access to both the main living space and the foyer is ideal. Maybe the fireplace can be shared. This space wouldn't be a real office. Picture an executive's office - that's not it. By the time this gets built, I won't be using anything that needs a fixed location, like a desktop computer. Maybe there would be a printer/scanner somewhere, but that would be the only giveaway that it is an office rather than a reading room.
So next I will try to get this plan more realistic.