Depending on whether you want change any moves on your team:
No, I'll keep the moves.
- Life Orb: does added damage in exchange for 10% of your HP every turn.
- Leftovers: keeps Gardevoir alive.
Suggestion: I like Leftovers just because it gives any Pokemon more staying power while the Life Orb detracts from that.
Yeah, I could swap a move (Trick).
- Choice Specs: screws the crap out of physical attackers and puts a dent in some Pokemon if you choose to attack first.
- Choice Scarf: screws over any slow Pokemon and allows you to use that Trick faster.
Suggestion: Choice Scarf is probably better as you'll have a much faster Trick.