Since you've already settled on 22x26 no need to talk about that. My 30x40 with 10' walls is way small. I do have a 9k Rotary 2 post lift and it just fits my 10' wall shop with the lift in the center at one end, it has about 8" clearance.
My suggestions (not gonna talk about bigger is better
1. 10' walls min., 12' of even 14' is better since you can build some storage up high and a lift will work better.
2. Be sure to spec 24ga roof metal, sides as well if the budget allows.
3. Outside on the compressor, I'm moving my air compressor outside as soon as I build a 20x40 canopy on the front of the shop (and pore the concrete slab).
4. With the size shop you're thinking I'd consider going with swing or sliding doors to avoid overhead door conflicts with the lift when a vehicle is on it.
5.AC, at 22x26 a big window AC will cool it, just be sure to wire with max load in mind and plenty of outlets.
6. If you pore a slab outside, may as well cover it. If it's on a south wall the cover will keep the summer sun off the doors and you can keep the doors open in a light rain, nice at times.
7. I'd spec 5k concrete and have it power troweled.
You didn't ask for lift opinions but...I started out thinking I wanted a 4 post. After much consideration and lots of advise I went with a quality 2 post. One of my better decisions. Much easier to work under it and I can store a car on it if needed.
Good Luck!
