my pokemon white team:
Zoroark LV54
Chompy (Krookodile) LV59
Zekrom LV53
Scolipede LV63
ARCEUS LV100
Zippy (Elektross) LV54
And for lvling at the elite four i use exp share, and a Smeargle a friend gave me, LV100, with no guard, and he knows all the one hit KO moves, with max speed also.
He kinda fails in this game though, because of marshal. So arceus is a backup mostly.