Where are you guys at on your Heart Gold/Soul Silver playthrough?

Bugsy rematch was easy. Anyway umm, can any of you give me some tips on how to make my team more well rounded for the Battle Frontier?

Feraligatr - Crunch, Ice Fang, Waterfall, Aqua Tail
Ampharos - Thunderpunch, Charge, Discharge, Thunder Wave
Slowking - Surf, Zen Headbutt, Psychic, Nasty Plot
Noctowl - Dream Eater, Hypnosis, Fly, Extrasensory
Sunflora - Petal Dance, Solarbeam, Sunny Day, Leaf Storm

Any advice would greatly be appreciated because I feel with the moves I have now, I'd lose easily at the Castle, Tower, and Hall.