I am not a stunter either, I am scared, and not scared to say it. This is all from what I have read so dont take my word for it. But... Suzuki owners will run their oil about a quart high, and Honda's seem to do ok with the normal level, but if you are going to be running really long then even some Honda owners will add a tad to theirs.
I dont remember about the other brands, I think Kawasaki owners over fill too, but Honda's did do the best.
Either way though, when the bike is up like that the oil sump is not the lowest point so you do run the risk.