RE: Yet another question about a board
Have you seen the speccifications on the '08 Starboard Futura 122?
I don't have that information so I was guessing it would be similar to the '07 Carve 122.
If the Futura is indeed 71 wide, that might help slightly with early planing, but overall, with your 6.7 m2 rig you are still going to be limited to around 13=14 knots as your early planing threshold at your weight.
With a good powerful 8.0 you might bring that down to around 11-12 knots with really good pumping technique.
Hope this helps,