Hey Mick, i reckon you'd be right. All evokes are 32" wide and I use the 7'11 as I like the stability when waiting and I'm 94kgs. And throw it around no worries.
I have 2 mates who are both about 113kgs and use the 9'4 last years model and 9'2 this years model and have no worries at all. You'll feel a bit wobbly at first but that's the same on any change of boards. They are great boards, solid as and priced right. We all have the carbons too. Good luck

. Cheers whitey.