Right longboard size

Hi all
Apologies if this type of question has been asked a hundred times ! I'm looking to get a longboard for the ankle-high days and also think longboarding is so graceful and would love to get into noseriding. I've had a 7'2 minimal and a 6'2 fish but the surf is so inconsistent where I live, I'd love to have the option of a longboard.
I'm just under 5'8 and about 70kg. Would a 9'6 board be excessively big for my height. I'm also looking at a PU 9ft 1" x 22" x 2 1/2" board but am worried that it's not wide enough or thick enough for ankle-high waves. Would the width/thickness effect my ability to noseride it ?
Thanks in advance !
Apologies if this type of question has been asked a hundred times ! I'm looking to get a longboard for the ankle-high days and also think longboarding is so graceful and would love to get into noseriding. I've had a 7'2 minimal and a 6'2 fish but the surf is so inconsistent where I live, I'd love to have the option of a longboard.
I'm just under 5'8 and about 70kg. Would a 9'6 board be excessively big for my height. I'm also looking at a PU 9ft 1" x 22" x 2 1/2" board but am worried that it's not wide enough or thick enough for ankle-high waves. Would the width/thickness effect my ability to noseride it ?
Thanks in advance !