Blank canvas, steel sided 40x60 pole barn. Thoughts on insulating, electrical, heating???

I know 2 friends who used the spray foam for insulation & it works VERY well. Not a cheap insulation, but worth the expense. It will pay for itself in no time. Also one heats his garage with a wood stove. Between the wood stove & the spray foam, it stays very comfy in there, & his pole barn is Huge! Long enough to park his Peterbilt with a sleeper, & a 48' trailer on one side with room to spare at front & back, plus the other side that you could probably fit 6 cars in. I think it's 60'w X 80' long. It's a big shop. He swears by the spray foam.