Thanks cowlitz coach. I ended up buying this bus and you were right, when I got down to see it, the headroom was less than I had thought.
I probably could have waited for a better deal, but the bus had almost everything I was looking for. The fact that I bought it from an engine repair shop who had looked it over really sealed it for me. The guy flushed the fuel system and fixed some hoses for me and didn't find any glaring issues. Indeed it runs great.
I was able to puck it up for 6000 which was my top dollar. I guess I was just anxious to get started, but I'm happy with my purchase. I'll link my build thread when I get home.