Not to double-post, but... seriously...  I need hlep. XD

I'm in the middle of a PokeCrisis - I'm finally playing Pokemon Y and I've already got almost all of my team, but I keep learning about the Gen VI Pokemon and it's so hard to pick the last slot.

So currently the team is:

Axew
Lucario
Quilladin
Fletchinder
Wartortle
Kirlia

But I want the Onix I caught, or a Rhyhorn, and I really like the fossil Pokemon (but I'm even having difficulty deciding between the two, though I think I prefer the Ice one, and also Aerodactyl later in the game)...  Plus I'm still super early in the game, so there's a butt-ton more to go and I have no idea how to decide what I want in my party.  This is the first time I've had this problem in any Pokemon game.  Oh, also, I'll probably want an Eevee...  Though I might have to say no for just one game on that.