Hey Mamurray1,
I was riding a Protoy 135 last year at times in powered up sessions and found that the Protoy handled the chop beautifully with the double concave bottom.
I am about 85-87 kilos and wouldn't use anything much smaller. 135 is a good comfortable small board for a bigish guy, going too small becomes harder to freestyle in choppy waters and can be too difficult to maintain a steady planing speed in gusty or holey conditions.
I also rode a Switch 135 last year and it was a bit more of a general purpose board but good bottom end and good alround, but I still prefered the Protoy for a smoother less bumpy ride.
Just check out the AIrush website for board details, but certainly don't go any smaller than 135, it will be a waste of time and money for you unless you ride in glassy smooth conditions in really strong winds.
Good winds,