Can't comment on Queens Bch But,
I have a 6.6 Infinity & sail mostly in gusty chop, I love it

I'm 85Kg on a 100L board, and sail this combo 90% of the time. The Infinity has a good wind range and handles well. I'm mostly just blasting up & down the coast, and small old fella jumps.
The young guys here, who are into all the tricks, are on wave sails. Guess it's what ya after

but the smaller wave sail for high winds sounds good.