I would, but I'm not sure they can run four 550S motors. It only says 2 in the doc. I'm going to buy 2 of those cheap eBay ones just for testing. They're £10 each so not too much of a loss. After, I might get a couple of Botbitz 30A controllers and modify them to run 2 motors each on the same channel (if that's possible), or a couple, of hobbywing dual controllers, or a Feather2 if it can do 4WD (plus I can get it repaired at a reasonable cost).