You might want to look at the iMIG-200. Small, and packs a bunch for the size. Run great on a small generator or 30 amp circuit.
The price is not too bad. On our MIGs, old or new, they are all rock solid, a new one will be cosmetic changes and maybe a feature.

When I was a kid we used to go to a place called 6 gun territory. Same thing, staged gun fights and fall from a roof. That would be a cool job.