Why are you using 4 starters on a team? I mean you can, but just because you can, why would you? I mean in a game with Caterpie for example, you can use six Caterpies, and you can not evolve them, but why would you?
Mostly because I feel like using all starters is a cool idea, but I can go deeper, Charizard and Venasaur because duel-typing, saves spaces for other Pokémon, Blastoise because it's super bulky and one of my favorites