So essentially when you called you were just wanting to make plans for the future shop. That may have been a bad idea to go that route because even if you could have gotten a discount on it that doesn't mean when the shop is finished that the discount will still be available to you. It seems to me right now you would be better off just looking around on the web and retail outlets for stuff that you like. Hopefully you refinance and can start building the shop once it goes under roof that's when I would start looking to buy which I think is what you were getting at. As for a shop that size you can do a pretty good amount the worst problem you will have is buying to much stuff and trying to fit it all in. I find that sometimes I would just about be willing to get rid of some of my equipment if that meant a little bit more room. So only buy what you think you'll be using often then as you need other items pick them up or you'll end up like me cramped for space. As for dust collection if I were you I'd go with some type of over head system for the bigger machines that'll be used often and have a few shop vacs handy for the rest. You could use a wall system but unless you have everything set up not just equipment but cabinets, shelving, and storage it'll be in the way and eating up a lot of space. As for the compressor I'd set up an enclosure in a corner with a filtered air source like a filtered vent lol that you can put it in and leave and run your hose on the ceiling with split fittings and you'll never trip over a hose and no matter where you go in shop you'll always have an air source. You could even run it to the other side so you could work on your jeep.