I'm not as cavalier about enthusiasm for an attached greenhouse on bedrooms or lack of fresh air for the bedrooms. Greenhouse air is typically very high humidity, rich in soil mold and bacteria. Mold and algae growing on greenhouse walls is often reported here. Water streams down my friend's greenhouse walls in winter. For some with allergies or chronic diseases (typically autoimmune), this might be a very bad idea. Under windows, in the framing and insulation is where most home mold is found, from window condensation. The good news is the greenhouse will protect the window from cold. The bad news- that section of wall will now be exposed to higher humidity year round and may never get a chance to dry out to the outside (air movement and transpiration). This is very climate dependent, and also, if the house has central AC that is run often, the bedroom window walls may be kept dryer through that, assuming there's no vapor barrier behind the drywall which will largely stop transpiration.
Just saying, think it through, perhaps check to see if anyone has done this in your climate, and give priority to family member's health. We tend to not value it until it is affected badly.
I'd also note that the solid north wall is the absolutely cheapest wall in a greenhouse.
PS- I have no experience with your Virgina Beach climate, though I must say by the stats it looks lovely. I don't see any months with low humidity, which concerns me about mold in the proposed shared wall. Local experience would be a real big help.
