It sounds like a little general purpose MIG welder will fulfill your needs just fine, IMHO. I'm not an expert welder, but I've been welding since high school and worked as a mechanic/welder for years when I was in my 20's and 30's. I've never owned a welder myself, so I did a bunch of research to try to figure out a suitable machine for my home garage use.
I ended up with 180 Amp Lincoln MIG welder. Home Depot sells this exact welder (except it is called the "Weld Pak" 180 instead of "Easy Mig" 180) for $750 locally It is a 220v machine, so I had to add a circuit in the garage. That was easy, but it cost about $40 for the breaker, receptacle and wire. I'm into everything including the new 220v circuit, a cart, and a 40 cf bottle full of gas for about $1050. There are definately cheaper and easier ways to get started welding, but I won't need anything more than this for what I'm doing, and it sounds a lot like what you will be doing.
I think you mentioned that you live in Boise. If you want to come over and try it out, bring beer. I drink Coors Light. I'm near Lake Hazel & Cloverdale.