Planning a shop build, any suggestions?

In floor heat is the way to go. Make sure you have a floor drain and plumbing for a sink. Use LED lighting. If I had a chance to go my shop over I would put an under floor lift in and not a post style lift. That way you can park over top of it and not have the post in the way when you are working on a vehicle or a tractor and not using the lift. If it is in the budget I would do spray foam insulation, I did with mine and it saves me a lot of propane in the winter.