I took a quick look. Only problem I see is that, with the use of 12’ 6" 6x6s and 12’ 6" 2x4s, you essentially have TWO 12’ 6" sheds connected only by the roofing!
I’d want to see some detail on how you plan to do a better job tying together the two halves of the structure.
As far as model organization goes, I suggest you use some layers! Just so you can isolate various portions. At the very least:
- Foundation
- Roof Panels
- Posts
- Beams
- Bracing
But if you do this, remember to leave the raw geometry on Layer0 - only assign your groups/components to one of the other layers. The grouping will then be controlled by layer visibility, while the geometry each grouping contains will remain on Layer0 - as it should be!