Really good suggestion - research and plan for a couple months - you only get a blank sheet of paper once.
Figure out how many outlets you want, and where, then add 3 times as many more (on 3 more circuits) in between.
Put some trailer-hitch sockets in the floor so you can drop-in mount things like tubing benders in the middle of the floor, then remove them and park there when you're done.
Run light all the way to the edge (my welder outlet is by the garage door, the closest light is about 8 feet away from the door - guess where the shadow usually ends up...right where I'm trying to see to weld).
