My actual team so far, after the first Gym, is a Lv18 Frogadier.
My planned final team for the Elite Four will consist of: Greninga, Mega Charizard X, Aegislash, Aurorus, Hawlucha and Dedenne. I think I might have thought of this team earlier on in the thread, but having had a look at all of the Kalos Pokemon confirmed, this looks like it'll be the best overall for me and my battling style. :D