isonic 150 - team reply?

[bpstarbaoard]

Second try!

Can some one of the team give me advise!

Hello (again),

I'm a advanced windsurfer (weight: 83kg - length: 1,88m) and I'm looking for a isonic board.
Aim: to do some (downwind) slalom races on a lake (distance between buoys: +- max 400m).
In light wind conditions, I use a Neil Pryde sail V8 - 9,4m² (I don't have a bigger sail).

Questions:
Is the choice for an isonic a good one (instead of a formula board)?
Do I need a isonic 150l or a smaller one?
If the windconditions become stronger, what is the maximum windspeed or windrange (Bft/knots) for an isonc 150 (for an average windsurfer like me)?
How does this board perform in choppy conditions?

Thanks for your answer!

Bernard