I say that Talonflame is a good choice. It has a good moveset and almost 500 in its base stats, but isn't good for competitive. If you choose the fire type starters, like charmander, fennekin and torchic, it will be better to you to train, gain exp, have a good moves and stats and. I would choose Charizard, since it has two megas to choose and best stats in both. Volkanion is also an awesome Pokemon but you cant catch it normally, only by events. If you choose any of choose any of these for the main gameplay, your team will be almost invencible