Getfeetwet is a good source for lots of electronics; refurbished ones, too. With all due respect, it seems like you're putting a LOT of electronics on a rather small boat. We have GPS chartplotter from Getfeetwet (refurbished) and a VHF radio. Anything more than that IMHO is just looking for things to go wrong and/or break. But if you're into gadjets, go for it. I reckon my eyes and ears are better than most of the electronics, except they're not under warranty and seem to be failing with time!