When I start playing a Pokemon game, I plan my final team out beforehand. I also try to use region-specific Pokemon, and make sure to not use anything I've used before.
This made Black 2 a challenge to plot out. I'm also planning to to a Sapphire run after this, so I didn't want to step on any gen 3 toes with my Black 2 team. In the end, I'm going to go with this:
-Excadrill (earthquake #1 korea)
-Chandelure (love the design, love the typing)
-Galvantula (didn't have room for it during Black 1, now I do)
-Lucario (not 5th gen, but you don't get a riolu this early in the game every day of the week)
-Haxorus (I wanted an Ice-type, but I've used them all, or they come too late, or they suck. so dragon it is)
-Starmie (need that type coverage, also I've always wanted to use one)Funny thing is, I just beat the 4th gym, and I only have a Riolu and Drilbur so far. I think this is the first game where my final team won't be complete until like the 7th gym… usually I find everything I need before the 4th. Guess this is an opportunity to raise some other guys as stand-ins, for now. Make use of that downloaded Genesect and not feel guilty that he's taking exp from pokes that need it.
I had half of your team in white. Chandelure and excadrill are true powerhouses. Galvantula pales in comparison, but it has good moves and typing, so it was always very versatile. You should be close to getting a joltick at this point, and litwick comes soon after.
I recall in white I had to wait until getting mienfoo to feel like my team was complete.