A 110v Mig...oh boy, you are going to be limited right off the bat on that one. I wish you the best of luck. Aluminum may just demand more power than your machine may produce.
Using a different liner, rolls, etc. will get you going....as far as your limited range will allow. Many larger Migs come with a spoolgun that attaches either with an adapter or as a plug-and-play option. Still other Migs use a push-pull drive system. The spoolgun deals with the troubling tendency for aluminum wire to birdnest due to its having to feed all the way from the drive rolls out through the long liner by having a small drive system and spool of wire in the handle of the spoolgun itself...short run-no kinks. The MM251 I have will allow the use of the regular gun for steel and I need only to turn on the Argon tank valve and pick up the spoolgun to start a bead for aluminum.
For your set-up, realize that you are going barebones and will need to swap out the liner and drive roll whenever you switch from aluminum to steel.
If aluminum is something you consider you will be doing a lot of, you may want to consider a larger 220v Mig with or without a spoolgun. I'm not making any judgements on your 110v unit, and we all like to be able to use what we have already, but you are going to be fighting an uphill battle at best. Again, best of luck.
Miller 251, Lincoln PrecisionTig 275, Miller DialArc 250 AC/DC, Hypertherm 900, Bridgeport J-head, Jet 14" lathe, South Bend 9" lathe, Hossfeld bender with a collection of dies driving me to the poorhouse, Logan shaper, Ellis 3000 bandsaw, Royersford drill press and a Victor Journeyman O/A.