Let’s see, I need an abrasive cutting wheel, maybe for the skilsaw, maybe a new tool. A new welder. I haven’t done any welding in nearly 30 years. These newfangled wire feed things seem the cat’s meow.
A 4 or 4.5” grinder with a cut-off wheel(s) should cut that tank pretty handy if it is not over 1/4” thick or so. Then you have the grinder for smoothing up the edges.
Wire feeds are nice, a lot easier than stick welding IMO. I can do stick welding sort-of, if you have a lot of imagination:-) I can gas weld better than stick welding, I don’t have a wire welder, I do have a small 100amp stick welder though.
But you would need a looong extension cord!!!
Good luck on the smoker
Regards
alfa6 ;>}