this is the wetsuit i have:
http://www.cleanlinesurf.com/product...at=1392&page=1

anything thinner than 5mm, maybe 4mm, you are gonna be cold and uncomfortable.

booties and gloves are a must also, for any extended amount of time. booties are 50$ and gloves are 40$

check out rip curls "f-bomb" suit, its very nice also.