Well, I beat the Elite 4 on my first shot yesterday with a team of lvl 50's across the board. For some reason, it seemed easier this time around. The team was...
Torterra (A physical tank, and Wood Hammer is Huge.)
Garchop (Probably the best sweeper I had.)
Luxray (Had to teach him Thunder, but it was worth it.)
Bronzong (Didn't really use him much, but Hypnosis came in handy.)
Drapion (Weak before I taught him some moves like Brick-Break, but he was basically a speedy tank.)
Gyarados (Just. Huge. Ya, I know I only like to use ones of that generation, but I wanted to test him out with the new physical attack system.)
EDIT: Still haven't been able to get on Wi-Fi where I'm at. Any tips?