I suggest you toss Nozupasu if it's giving you problems. I never really trusted rock types ;o
Nendooru is all very fine and good - does it learn earthquake though? Hm not naturally. Why not give it the earthquake TM or something. Or if you can't bother with that well never mind then.
Hoeruoo: why not give this guy Ice Beam then. Dunno about the other slot.
Yamirami: This guy can be pretty helpful. No comment.
Toropiusu: All extremely nice and fine with me. Can't think of another thing to put over solarbeam.
Bashaamo: That's pretty much all you need. The guy's a lifesaver.
It shouldn't be a problem putting Boomanda in there - only you will be getting a 3x ice weakness in which Toropiusu and Boomanda suffer from it 4x badly. So if you ask me you need to toss something out of this team. It's missing something... I can't put my finger on what though.
Oh, and try going up the stairs and stuff until you see a triner with a roziera and then a ladder next to her. You need flash, rock smash and strength, btw.