I have the same welder and have done easily $1k worth of welding with it if I had to shop it out. Best kept secret out there! Kickstand mods, 2 rear racks, spare gas can rack, brackets, mobile hitch mount for my HF tire changer, metal repairs, and some custom tools all made on the cheap!
I have added a bigger pad to all my bikes, plus a few other FF's bikes, so about 10 now. I would recommend removing it from the bike next time, it is much easier to work with and you don't have to worry about electrical or heat/spark/fire damage to the bike. A piece of 3"x1/8" flat stock works perfect and a 3' chunk will make a bunch of pads. It is nice to have since if it saves the bike dumping one time, it is well worth it. Soggy ground, really hot asphalt, heavy luggage, sand, and mud are all times you will wish you had the bigger pad. There is no downside to having it on there that I have found yet.