Planning a shop build, any suggestions?

Hello ladies and gents, I’m in the planning stages of a 40x60 shop and open to any suggestions/ideas y’all might have.
A few plans I have are 2 12x10 or 12x12 doors in the 60’ side of the shop and I plan to put heat in the floor. Aside from that, I’m all ears.
Consider your intended uses. If fabricating parts for restorations you need machine stations and a flow pattern to move from one to the next. You will need lighting, power and air outlets easy to access without cords and hoses all over the floor. You need reels or old wheels on storage racks to hang them on.
I would consider building a little higher to enable a mezzinine for storage or a small "apartment" for late nights or visitors. Going up involves stronger walls but the cost is less than out. The mezzinine can be put in later. Consider a washroom with shower to clean up before going back to the house. Prevents grumpy girly syndrome. I know one guy that bought an old welding shop in a small town. Has a 2 bedroom apartment and shop. Urinal is flushed with a simple ball valve. The shop door has an opener, screen across to keep mosquitos out and looks west to the Rocky Mountains. Sit in a 57 Chev trunk couch sipping a beer and looking at the mountains.