I dont want to hijack a simlar thread so....

I am looking at buying a JP 06 93ltr fsw, I weigh about 92kgs starkas 173 cm short and will probably only get down to about 88kgs over summer if I am a good boy, with rig + me + harness I reckon the total weight will be around 100kgs.

Yupp tubby

That gives me a negative bouancy of 7 kgs, should I be looking at somthing more like a 100ltr board? My smallest board is a 102 old plastic jobby that I belt around on at Woodies in the chop and I go fairly hard at it when I am on the water (Well I feel like I am) I have launched it off chop just to see what will happen, one word (SPLAT) so I give it a nudge.
Do you think my proposed new purchase is the way to go?
If you think I will manage, are there any tips from you gurus to assist with getting up on the plain? Do you also think a 6.7 in 18knts will get me going? (How long is a piece of string.... I know, sorry but I need an idea form the guys that know)
Sorry to ask so many Q's, but I dont want to make the incorrect decision, the board I am getting is from a good mate and I know he would tell me if I was doing the wrong thing or not, I am interested in hearing other opinions.
We are having our first child in about 2 months, so funds are needing to be spent wisely.
Thanks heaps.
GT