Tenorman, I think that's fine. I have done that plenty, as a percussionist. Moving around like crazy is what we do, I'm sure you know that.
And to everyone else, I'd really wish you consult the thread, especially the first post, before you start asking questions, especially if it's how many alto saxes there are, as it is specifically stated in the first post, 2.
And, Nightengale, perhaps having the intent of just doing your best for the competition, and not setting on winning it, which can sometimes be two different things, would be more desirable. And plus, if you write a good solid composition, no matter how you deal with the instruments you don't like, you should have a good shot at winning anyway. This goes for everyone: Just try and do your best, this is not the end of the world composition competition!!!