Longboard Length - Pearson Arrow F1

Board length question - know there are a lot of variables here.... I'm 6'0" ~190lbs, I've been on a 7'6" Vernor hybrid funboard (http://vernorsurfboards.com/images/boar ... hybrid.jpg) for 2 years and like it but my wave count isn't great on the smaller days out here in OB / Pacifica / Bolinas. I borrowed a friend's 9'2" Meyerhoffer (weird board shape and kinda thin, http://www.mensjournal.com/gear/sports/ ... d-20120619) and found myself catching EVERYTHING and was stoked... so I'm in the market for a longboard.
Think I've settled on a pearson arrow F1 (http://www.arrowsurfshop.com/#!product/ ... -one-model), but I need to figure out length... the guy in the shop was pushing me toward 9'0" but I want a balance of fast paddling into small waves but not huge turns. SO - I'm curious how much of a difference I'm going to see between 9'0, 9'4" and 9'6"... for my height / weight 9'4" sounds like a sweet spot but tough to know.
Anybody have thoughts? Or should I just pick the one in the middle and pull the trigger? Thanks!
Think I've settled on a pearson arrow F1 (http://www.arrowsurfshop.com/#!product/ ... -one-model), but I need to figure out length... the guy in the shop was pushing me toward 9'0" but I want a balance of fast paddling into small waves but not huge turns. SO - I'm curious how much of a difference I'm going to see between 9'0, 9'4" and 9'6"... for my height / weight 9'4" sounds like a sweet spot but tough to know.
Anybody have thoughts? Or should I just pick the one in the middle and pull the trigger? Thanks!