Recommendations on new shop

Hello all.....I have only been a member about a year and mostly have just read tons of good info. Have bought a few parts too. I'll soon be starting construction on a new garage and am looking for some advice from those that have been there. Concrete man is coming out next week. Current plan is three bays and 32 feet deep with height to allow for a lift.
Questions so far are:
1. One large and one small or three small overhead doors?
2. Locate lift in one of the end bays or in center one? Need to locate piers for posts.
3. Plan to have rough in plumbing for bathroom. How about a floor drain for a wash bay?
4. Air compressor in building or in small room out back?
5. Best way to heat it for winter use.
6. Any other ideas or suggestions you guys have.
Thanks in advance for the help............