220 Volt Mig/Tig. I'd rather TIG roll-cages/suspensions than MIG.
Electrician to wire the 220 Volt -Pricey
Grinders- 8", 4", & Die
Cutting Products- 3", 14" chop saw, Plasma Cutter
Protection-Welding jacket, Gloves, auto dark Helmet
Fire Extinguisher
Fab Tools-Tube Bender-Go big ($1,500) or you'll regret it)
Tube Notcher
Drill Press - The bigger the better
Bench - Metal top - help if you need to make temp jigs
Lighting - High intense flourescent lights (it sucks when you can't see what you are working on

Welcome to the darkside Kevan. The biggest question you need to ask yourself before embarking on this adventure is will it be worth the mega costs of setting up your shop in the long run or would it be cheaper just to have someone do it for you. The price of the listed items will add up big time.
My Xmas list. The welder/better tube bender/plasma cutter. Got everything else but don't see Santa carrying any of the wnated items in his rucksack. Bummer