Nope you cant hire any gear nearby, so wil have to make do with what you've got.

I doubt you would really need a weed fin, unless you really want one I wouldnt rush out to get one. I have had a couple of times where there was some weed but didnt really cause too much of a problem.

The time of year your going is usually very windy, I would definately bring the 87L and some small sails too. A typical NE seasbreeze day down there would be anything from 15-25 knots sometimes even windier!

As far as wind graphs go, none of them would be too accurate for jervis bay the closest would probly be any of the Illawarra graphs. So if there green then I say it would be windy at the Bay.

Theres heaps of sailing nearby, a real favourite of mine would be Gerroa which is about 45mins north would definately recomend a sail here. Otherwise I would just do some exploring as there are heaps of places lesser known. Sanctuary point is good sailing too, waist deep over a sandbar for like 500m or so. This website has some wave spots for the area listed www.nswwavesailing.org