Well, hello! Welcome! I'm off to check out your build right away!
Also, take a look at what I spent my monthly allowance on today, everyone!
A 5 liter bottle of Argon with built-in flow control valve, some filler rod, a connector for the ground cable, a 200 amp stick welding handle, a cheapo spot weld cutting tool, some welding magnets, welding clamps (?), some thinner cutting disks, some practice steel tubing and a pair of (not quite) welding gloves. If you're gonna go cheap, why not do it on safety ...