opinions on beginner board please?

Hi, after reading countless topics like this, apologies to anyone thinking 'not another one!' but any help would be very much appreciated!
I'm still a newbie to the sport and living in England i cant see myself being a pro anytime soon
lol so i'm looking at getting a funboard.. i'm 5'6 tall and 130lb and looking into getting an NSP funboard/surf betty, i'm just unsure which size to go for. A friend of mine (doesn't live nearby so can't just pop down and try it out) is selling an NSP 6'8 funboard and i can get it at a pretty good price, would that be suitable for me? As it says on the GSI website that this size "will offer a stable platform for beginning surfers as well as a rounded pintail that will hold in overhead surf. With this shape you have all your bases covered" - is that actually true or will it be way too small for me? I've just learnt to ride the white water comfortably (on a friends bic 7'9) and looking to eventually progress but don't get to the waves that often, and even when i do they aren't always great! So i don't wanna spend a fair bit of money on a board that when i do get to use, isn't gonna be any fun and won't catch anything (it's 21" wide and 2 7/8 thick if that helps?!) and stop me advancing. If the 6'8 is no good, would i be better off going for the 7'2 or 7'6? Is there really a lot of difference in those 4 inches?
Sorry for the essay, it's so hard trying to find an answer already posted online as everybody is posting dif height, weight etc so figured you guys may be able to give me a pretty good answer
Thanks in advance!

I'm still a newbie to the sport and living in England i cant see myself being a pro anytime soon


Sorry for the essay, it's so hard trying to find an answer already posted online as everybody is posting dif height, weight etc so figured you guys may be able to give me a pretty good answer
