Robby, not sure how much the campsite costs, see if you can get hold of Simon Hurrey (ex-Club Vass), who might be able to point you in the right direction, or give you some general ideas. re: kit, I reckon that's prob be fine, but you might want a freestyle board, or something like a Starboard carve 99 or 111 for most of your sailing. Just my opinion, but in my experience its mostly 5.5 conditions in Vass in the afternoon's.
call samba travel in Vass. English speaking and they have all the info. Unfortunately don't have their phone number. Definately go for a bigger board and sail combo. You may be able to store your kit at Sunmaves as he has a board and rig store there and if you drink beer at the place, he lets you stash it there for free.
Heres the email address for Samba tours. email@example.com The camp site isn't dirt cheap and you may get an apartment room for the same price for 4 weeks. Jan at Samba Tours knows everything there is to know! I'd play safe and take a bigger board eg 100L freeride/freestyle and its usually 5.2-5,7 weather. Have fun!
we've been regular visitors to vass for a few years now and although I'm a bit of a wavehead myself vass is just NOT a place for the waveboard.
if you're not into blasting style burn n turn then go freestylin'.....I'm same weight as you and get most fun out there on a freestyle/wave circa 90-100, 59-62 wide.
see you out there in july