Well, let's see if I can answer this. Haven't answered teams before :P
Looks pretty good, but you may want to but Aerial Ace in there, as it still gets the Technician boost, and it hurts those pesky Fighting-types.
I definitely see what's going on here, though you may want to add Charge Beam. With it comes a 70% chance to raise your SpAtk, Serene Grace doubles that to an astounding 140% chance! She is now your Special Tank!
Good idea, but we might want to use in Bronzong's amazing Defensive stats. We'll make it a Mixed Wall. I'd use 252 Def, 252 SpDef, and 4 HP. Give it Gyro Ball, Protect, Substitute, and Earthquake. Keep the nature though ;)