A few updates......
Got the Quincy QT-54 compressor in. 60 gallon and 2 stage 175psi should be plenty for anything I'll ever need to do. Got it on sale at Northern Tool with free delivery. They said it would take 2 weeks but I had it in 2 days. Direct ship from Quincy and showed up in a nice crate on a pallet. Took me 20 minutes to disassemble the crate to get to the compressor. Only thing I didn't realize is it doesn't come with a power cord whip. I figured I could just hit HD and get one similar to what you'd use for a clothes dryer but no dice. I had to get wire and a plug and build it. Cost about $20 I think.
Then I had to figure out how to get the air from inside the closet to the regulator mounted on the outside of the closet. I figured this would be an easy question for the guys on GarageJournal forums, but no one had any good ideas since the closet is sheetrock inside and out, so I came up with my own solution. Mounted some poplar 1 x 6 across two studs and used 3/4" hardline through a hole in the wood. This also gave me a nice mount point for the regulator and insures a sturdy install. I had to have a custom whip hose made that was 1/2" male pipe thread on one side for the compressor and 3/4" swivel on the other for the pipe connection. $75 for that. If I had it to do all over again, I'd probably just use the 1/2" Maxline rather than 3/4 as I didn't know I would have such a hard time finding 3/4" fittings and connections. With the compressor being 1/2" that's likely the bottle neck anyway but it's done now.
I made sure the pipe sloped toward the regulator so any condensation would flow to the filter.
Had a neighbor come over and help me move the 508lb compressor in to the closet. He had some of those moving straps that go over your shoulder and under the item being moved that made it super easy. We literally just stood up and walked in to the closet. I picked up a 3/4" rubber mat from Tractor Supply and cut it to the size of the floor in the closet for more sound deadening. A razor knife dipped in water for lubricant and a large T-square made cutting it easy.
Finally, I just connected it all up. I had to really tighten the swivel joint to get it to not seep air. Quincy specifically stated not to use teflon tape, but to use pipe sealant. If I had it to do over again I'd use teflon tape AND pipe sealant.
Finally, a buddy came over last weekend and helped me get the RapidAir MaxLine system installed. I picked up a jig from a guy on GarageJournal who had recently done his to make straightening the pipe very easy. I went with the 3/4" kit, but they drilled the distribution blocks for 1/2" NPT, so I had to get reducers down to 1/4" for my air fittings. Another reason I'd likely just do the 1/2" kit if I had it to do again. I don't think bigger was necessarily better in this case. The systems was pretty easy to install, but be sure you have a solid plan. I used graph paper to map out exactly how I'd run the lines and exactly how much pipe I would use. I had right at 5 feet left at the end of the day. If you mess up it'll cost ya as the pipe is only sold in 100' rolls. I chose the MaxLine because it could be run much straighter than the standard RapidAir system. Maxline is vinyl inside and out with an aluminum core so it holds whatever shape you bend in it. Fittings are expensive, but the M7500 kit comes with plenty. I had to pick up one extra "T" and used one extra 90° elbow in a corner that was too difficult to run as a solid piece. The kit was on sale for about $150 and is a steal IMO for what you get. it looks great and works great. I put 100psi in the lines, shut off the compressor valve, and left it for 3-4 hours to test how well the pipes would hold air on their own. After 4 hours it still had 60psi in it, so not bad. I don't think you'd ever get it 100% air tight though. I tightened all the fittings VERY tight and used teflon tape and pipe sealant as well. With the compressor valve open, but the compressor turned off, it has held 90psi at the regulator for a week and the compressor tank has about 100psi left in it.
None of the brass parts below come with the kit. I had to get 1/2 to 1/2 reducers, then decided to use 45° adapters to keep the quick connect from sticking straight out. Those little pieces add up quick. I think I had $20 in all of them and I had to order the 45s online as I could not find them locally at all.
All that's really left for the shop is some entertainment stuff and the lift.
I've only shopped at Northern tool a couple of times and to be honest I'm not impressed. The associates seem helpful enough, but their corporate policies for returns and what not aren't confidence inspiring. I had leftover parts from the Maxline kit. I had my receipt. The store manager almost refused to let me return them because it was past 30 days. She wanted to give me $150 in store credit which I didn't need. I also had a lot of issues purchasing the air compressor as well which seemed odd with me standing there trying to hand them money. I'll use them as a last resort in the future.