I think the whole donation thing is lame as can be, and shouldn't be allowed. It's also pretty shady, as you've yet to say what exactly it's going to go for.
If this is allowed, what's to stop everyone from posting threads asking for donations to start leagues, etc.
If you want to attempt a record then go for it, but don't ask people for money to play that's pretty lame.
Sounds to me like you're just trying to get some extra pocket cash. I'm not sure why the mods haven't put a stop to this yet, it's alot worse than some of the things I've heard of being moderated lately