They are a good machine.......part of Millers umbrella now........it will do the steel range fine but will be a bit low on amps for aluminum, with some preheat it should work. Good start to jump in, can't wait to see some of your new jigs and fixtures once you get started gluing stuff together.........LOL
Migs not bad tp learn but get the auto darkening anyway.......may as well make it easy on a new venture as you can.......get a bottle of blueshield also.......waaaay nicer than fluxcore.
Opportunity knocks once, temptation leans on the doorbell.....