I have beaten the third gym! Tranquill w/ Super Luck + Scope Lens + Air Cutter = AWESOME.

My team is:
L21 Male Servile (Excalibur)
L22 Female Drilbur (Digger)
L23 Female Tranquill (Feather)
L22 Male Sawk (S.K. Guru)
L22 Male Blitzle (Max)
L21 Female Munna (Puff)