Well I did this late, but I finally managed to beat the Elite Four, N, and Ghetsis. This is my team so far :
[Image: http://floatzel.net/pokemon/black-white/sprites/images/500.png]
[Image: http://floatzel.net/pokemon/black-white/sprites/images/596.png]
[Image: http://floatzel.net/pokemon/black-white/sprites/images/573.png]
[Image: http://floatzel.net/pokemon/black-white/sprites/images/549.png]
[Image: http://floatzel.net/pokemon/black-white/sprites/images/565.png]
The only problem I've had with it was the huge hole in my team with the major weakness of Earthquake and other ground moves. My Cinccino also usually either gets one hit KO'd or severely damaged, which is why I usually feign away from Normal Types. I think it's because I held off on evolving her until level 45 where she learned Last Resort.
Carracosta also has a ton of weaknesses, which annoyed the living hell out of me when nearly every team I faced had a pokemon that knew Electric, Ground, Grass, or Fighting moves. Other than those, if I'm able to use Shell Smash I could beat the living daylights out of most enemies.
As for the rest of my team, My starter pretty much does both tanking and raping. It was able to take a surf attack from Ghetsis' Hydreigon (Which really pissed me off since that thing killed off half of my team) and have HP in the Yellow Zone. Flame Charge helps it get the next hit in before the enemy, which is usually either Heat Crash or Head Smash depending on the size of the pokemon.
Lilligant is also awesome with Petal Dance, I'm basically using a grass version of Dragons Rage, and with Lilligant's ability, I don't get confused.
Galvantula is pretty awesome too. It's fragile to a couple of attacks, but it nearly always hits first thanks to it's speed. With Electroweb, Agility, and Electro Ball I can pretty much ohko a handful of enemies.
I don't know what's going to fill up my 6th slot yet, nor what I might want to use to replace any pokemon on my team. I've taken a shine to these pokemon in particular. For the mean time I have Zekrom sitting in the sixth slot, which I only use when all my other pokemon are knocked out, which is a rare occurrence.
Quote from BobYoMeowMeow;366073:
you only need to use waterfall like... two times
and dive one time
I don't know what you're talking about, but I just beat the game using only Surf, Strength, and Fly.