If you are going to try and compete, accept one of the offers to borrow another WSM. You are going to be struggling enough at your first contest, no need to have added pressure of trying to fit it all into only one cooker.
Like the others have said don't be afraid to ask for help. I'm trying my best to be able to make this contest, if I'm there don't be shy, come by and ask if you have any questions (just a heads up though, I am Mr. AntiWeber so don't be surprised if my first suggestion is get a different cooker
)