I'm guessing the answer is no, but i just need to make sure. Am i allowed to bind jump to 2 seperate keys? (one for spacebar, one for up arrow)

I think it should be fine. We have allowed autohotkey for this already. I currently have jump set to shift in game, but autohotkeyed so it also works with spacebar. We agreed a while back that would be fine for runs, so your situation should work too.