I didnt try since 2 year the NP V8 10,6 and at this time I feel the sail a bit toos stiff to plane really early. NP decide to stop this size and tehir maximum one is 10 right now. The Overdrive 11mē have bean specialy design for the FE class and is really easy to pump and get planning with it.
We break some old NP extension on it in alloy and carbon. NP extender will be better.
Understand that you not race, but alloy boom works on the 11mē but anyway if you want to put more $ or € to have a carbon boom that will better of course. Just to know we are using the Nautix FE one in Martinique.
All the best