it depends really. that is probably a reasonable amount. but your best bet is to go to an event, or run it in a n arena and see how it gets on. In some arenas that will be fine, but in others(especially after heavyweights have been running) it may get stuck. If you have much morer than that, then flippers will be able to get underyou easily, so its a bit of a gamble really. I say leave it at thatfor the time being, and then try it out and see how it goes.