So a more detailed quote from the awesome builder was more horrifying than I thought (not sure the GC/PM fees were included in the rougher previous quotes). So still way over budget by many tens of thousands, so back to the drawing board.
Very disappointed, because I was hoping I could work something out with them (we're just so far apart for budget) even when doing a comparison based on removing 25% of the square footage. I just can't spend over $100k on a 900sqft garage, or even more for the original 1200sqft. I can't afford their quality of work, or justify the cost, as much as I may want to. I also can't afford $25k-30k for GC/PM fees on top of the already high materials/labor cost (part of the $100k+ cost).
Removing a few things that cost $1k here or $2k there doesn't bridge the huge budget gap, unfortunately.
Time to do some more thinking, and maybe considering being my own GC. Still seems like a stupid idea with a full time job, honestly. Trying to find a trustworthy builder is such a pain in the ass though, especially when trying to reduce cost.
I'm mostly just doing a bunch of frustrated complaining, sorry......