There are so many to choose from.  I would normally go for a water/ice team myself.  I just like the looks and attacks of water and ice.  But I guess if i had to choose a mix up to survive it would be:

Cyndaquil (on of the few fire pokemon l like to use)
Magnamite (in my opinion an excellent choice for electric)
Poliwag (which i would evolve to a Poliwrath, wasn't to keen on Politoad then or now)
Oddish (which i would evlolve to vileplume if male or Bellosum if female)
Ralts (an excellent choice next to abra because you don't have to trade him/her to evolve fully)
Poliswine (my favorite ice pokemon)

Of course i would evolve these little guys to maximize their potential.

If I were a pokemon I think I would want to be a cyndaquil.  I can be very timid, but when i get upset my temper used to get the best of me and like cydanquils back it would flare up.