I'm in the process of installing the lighting in my garage right now.It's a 30x40 and it will be insulated later on.For heat I purchased a Hot Dawg propane,ceiling suspended heater,it's made by Modine specifically for garages.They also come for natural gas.As for lighting I'm installing twelve 8 footers with the cold weather ballast on the ceiling,they will be hangers,and about six 4 footers on two of the walls.That sounds like overkill but in addition to working on my vehicles I have a Bridgeport and a lathe that I work with and my eyesight is not getting any better with the years,lighting helps a lot doing machining
.HF