I agree with above poster that the numbers are tough to see and make a scaled drawing difficult...

But it would seem to me that the simple solution is bedroom at each end with the sitting room in the middle. Bathrooms could likely be in the region of the current plumbing.

I currently live in a Cape Cod style home. We don't have a TV area. The staircase leads directly to a small hall with bedroom doors on each side. Given that you have enough room for a central room for a flex space, it's not a problem for whoever is using the room to go through the bedrooms into the baths. I suggest you put the baths on each end. The TV area in the middle as shown above. This makes both rooms ensuite. Be sure to plan for closets in each bedroom and a larger linen/storage closet somewhere in the flex space. The dormers are good for student desks if the windows can be placed high enough to accommodate the built-in desk.

This is a great floorplan. We are able to shut off the entire upstairs when not in use. It makes for a very efficient use of space. The rooms upstairs float in their own box within the building envelope. This makes for very quiet bedrooms.

I have a cape also. But, tell me, I'm having trouble discerning, what is the height of the knee walls here, and what is the height at the dashed lines? Is 7'6" your room height at the dashed lines? If so, the drawing above, while it looks nice 2-D, won't work for the right hand bedroom door entry (the door won't swing).