Help choosing board

Hello ,
I have tried surfing in a friend's board (7'5) and now I want to buy one for me
I have a good deal for a 6'7 BIC but I'm fraid that is too small
It make a big difference to a 7'0 ?
I'm 1.84m and 75kg
Thanks
I have tried surfing in a friend's board (7'5) and now I want to buy one for me
I have a good deal for a 6'7 BIC but I'm fraid that is too small
It make a big difference to a 7'0 ?
I'm 1.84m and 75kg
Thanks