The way I see it either Umbreon or Espeon, like someone before me said. But keep in mind you have a long way to work on that team. If you want to get in competitive play, you will have a lot to work on...
ok, other info on my team:
swampert:
moveset: ice beam, earthquake, muddy water, and hydro pump/cannon
swampert is best used as a wall.
infernape:
moveset:close combat, flare blitz, thunder punch, protect/grass knot
this is ok
tyranitar:
moveset: ice punch, crunch, stealth rock, earthquake
not bad but t.tar can be used better with some other moves
salamence: draco meteor, outrage, brick break, dragon dance
im guessing this is mixmence so take off dragon dance and replace it with fire blast or something.
electivire: fire/ice/thunder punches, cross chop
ok
items: to be determined