I replied to your welding question on your other post. Just my experience in automotive sheetmetal work.
Inverter machines are nice, 220V and you can lay down nice beads. I'm using an oldschool setup. 3-phase 400V powersupply for DC and a 2-phase 400V transformer for AC welding... Yeah I know sounds crazy, but so far they've worked fine
So far your work look nice.