7 meter for sure, don't believe the yellow arrows it will blow 28/30 knots. Defo twin tip as well nO need for a light wind board!
To early to tell yet anything could happen between now and then.
The last two races have been fairly light (especially last year) but don't let that fool you, one of these events the wind is sure to pick up heaps mid crossing and we will all be hanging on with white knuckles.
take a couple. and as someone said, go one size up, at least if it looks like being a regular sea breeze, as you will be going slightly downwind and the extra size won't be a problem. I suspect that the right size will be better than 1 size up, but if you pick it wrong you'll be better with one size up than 1 size down. And also I need someone to beat.