Longboards

Hi I,m a newby I suppose have been surfing on off for about 10 years.
I'm a 53 male my weight is about 80 k I'm 5,10 in height, any ideas what size board I should go for please , any help greatly appreciated .
Many thanks Jamie
I'm a 53 male my weight is about 80 k I'm 5,10 in height, any ideas what size board I should go for please , any help greatly appreciated .
Many thanks Jamie