If you go anywhere near water, the last thing you want is an open element "cold air" intake......look around on the forums for the stories of people hydro locking their engines while running a cold air induction. Not sure if the spectra system you're looking at is open element or not.
Probably the one improvement (and it'll be a small one) would be to run a dry element re-usable filter in the stock airbox.
The sealed airbox systems like Airaid's are nice, but I'm not convinced they're worth the money for the gains. I'd personally go stock airbox and AEV snorkel.