Regarding the bracing, I asked my general contractor and he is looking into it. Both of our concerns are around drywall and aesthetics so I'll see what he comes up with. It's not a deal breaker if it has to stay but I'm thinking there has to be a better way.Just a suggestion for the outletsLooking great!
That extra piece of wood on the back wall looks almost like a piece of wall bracing where it ties into the top plate there. I'm betting it goes all the way up to the peak of the rafters? It could be required by your structural engineer for the ceiling diaphragm for racking strength on the back wall. I would double check with them if it can be removed or not. Typically gable walls like your back wall can be braced with the trusses flat across the bottom with drywall and some 2x4 runs across the trusses. Because you have a vaulted ceiling there is nothing but the sheathing to stop the wall from buckling right where the truss meets the top plate. There should be some work-arounds to be able to remove that piece that could be discussed with your structural engineer.
See below:
Gable End Bracing | Structural Building Components Association
sbcindustry.com
Regarding the outlets, I put a note to be 48" to the bottom of the face plate like zc15 suggested. That made sense to me.
Current revised electrical plan:

I'm trying to figure out the sizing for the 220 outlets. Primary design consideration is a welder with my eye on Miller 215 Multiprocess with a nema 6-50p plug. I know enough to understand what people are writing in other posts but I'm not sure how to apply it and what my limitations are. Part of me wants to go to a 50 amp circuit with appropriate wire size (10 or even 8) just to be sure since the cost difference at this stage probably isn't going to be much. I'm planning to call the local welding supply shop and talk to them about and also get the electrician's take. I wouldn't mind also having the capability of charging an electric car but that's not really the main goal of this shop.





























