Hmmm I think there would be a better place to post your team for another game... I dunno maybe the white 2 boards... I know this will bump this topic anyways but if you have to bump it not once but twice and nobody responds.... It might mean that no one cares
I don't know about the whole rotating Pokemon thing, but I know it is much easier to train lower-levels in Gen 5 than in previous games.
The only games where I used more than 6 Pokemon were my SoulSilver, where I simply replaced several times, not swapping out, and an Emerald Mono-Poison run where I trained all 8 Poison types you could obtain, and used them for different purposes.
But yeah, as long as you don't mind the extra grinding, the more the merrier in terms of Pokemon diversity in your team!
Official Chespin of the Pokemon X boards. http://www.youtube.com/Decon082/