Recommend a Welder

Hobart 140 is good choice for hobby users. Filled 55cf argon/C25 bottle are around $100 and make good portable kit. Bout the same size as a 80CF SCUBA tank. Give you about 2hrs of arc time per fill.

Make sure those 120v outlets are at least 20amp circuits and plug directly to the outlet. 120v MIG is great for automotive, but watch the cold lap. S/F.....Ken M