Hey um this is actually really really cool in theory although I lack wifi so I cant participate. Anyways I'd probably throwout the Ubers rule since they're generally far too powerful and uncompetitive against OU Pokemon and the league's primary focus seems to be OU. At the very least I'd maybe reccomend allowing Ubers that were previously suspects [not initially banned ones, which includes Manaphy, Shaymin-S, Darkrai,, Garchomp, Excadrill, Thundurus, Blaziken, Deoxys-S although Darkrai and Shaymin-S are largely considered 'broken' in OU play]. Probably only allowing 1 or 2 suspects for a high price would be best.
Good luck with the league :]