Thats just going to take some experimentation on your part. bump up the pinion a few teeth and run it while keeping tabs on motor and esc temps. If theyre fine the go up a couple more teeth. If its over heating then take it couple a couple of teeth. You have to keep testing it until you get it...
I dont think you can make a Les Paul go faster. I believe thats up to you 🤣
Seriously though, you can add a larger pinion or a smaller spur to increase your top speed.