Well.. The 4 post lift is good ease of lifting, and setting the wheels if you have a wheel measuribg device. They're probably good for other things as well but
The 2 post and 1 post lift combined will be a combo that can take care of any kind of repairs.
So if you can only afford 2 lifts in total, that'd be my advice.
That's thinking ahead, giving advise on what lift go get after the shop is built!!

You may also want to see how much a kit would be, vs stick building it. About 10 years ago I helped a friend put up a 50x100 miracle truss building and the kit was darn easy to build with just a couple of people and a scaffold. All of the engineering was already done, with sets of drawings for the building inspector. Miracle truss went under when the economy tanked, but there are others around.
I thought about putting my building up myself, but I priced all of the options and for the extra money I wound up paying Morton put up my building. I know it cost more money, but I had a complete turn-key building put up in my yard in a couple weeks.
Do a build thread with photos.
Chris