Stuck but I think I know what I want to do here.
I want to reinsert my windows and caulk them well after cleaning and lubricating them. (Any advice on making old '95 bus windows more insulated beyond heavy curtains welcomed.)
After that I want to frame up my walls using a few methods.
For floor-ceiling framing and walls I'm thinking
If you look closely it seems they cut a notch in their 2x3-4 and sidled it in. This seems like it would work but I'd love to hear from yall.
The other way, for floor to bottom of window framing looks more like this
Thoughts?
Floor to ceiling framing, floor to window framing, insulating and securing windows.