Seems Pretty Good for In Game. Obviously you need a little higher lvls and the natures could be better but ill give you some better Movesets Too.
Ice Beam/Dragon tail
Unfezant is Best replaced, it overall kinda stinks, Id Get Braviary instead.
Unfezant If You Keep It:
Your Set is Good Except Toxic Over Feather Dance and Maybe Have Protect/Detect.
Fly: In game Nessecety.
Bulk Up: Boost!
U-Turn/Shadow Claw/Return: Coverage or STAB
Simisear isnt that good either. If you keep it:
Actually this set is good keep Simisear, this set beats most Elite 4.
Galvantuala is good.