Choosing a shortboard

Hi All,
I've been surfing on and off for about 8 years, on a 7'3'' Bic mini mal. I've certainly mastered catching waves, and making cruisy turns, but want a board that's easier to take out the back when it's bigger, and make more radical turns on, so have decided it's time to get a shortboard.
Is there any way to decide on the size of board you need, based on height and weight? I'd describe my ability as intermediate. I'm 5'10", about 160lbs, (11.5st).
I generally ride waves between 2"-5", but would be willing to ride bigger if more confident and getting less pounded on the way out!
Any advice would be appreciated.
Cheers - Mike
I've been surfing on and off for about 8 years, on a 7'3'' Bic mini mal. I've certainly mastered catching waves, and making cruisy turns, but want a board that's easier to take out the back when it's bigger, and make more radical turns on, so have decided it's time to get a shortboard.
Is there any way to decide on the size of board you need, based on height and weight? I'd describe my ability as intermediate. I'm 5'10", about 160lbs, (11.5st).
I generally ride waves between 2"-5", but would be willing to ride bigger if more confident and getting less pounded on the way out!
Any advice would be appreciated.
Cheers - Mike