Fun board/ longboard thickness

Hi everyone,

I'm currently shaping an 8'9" fun board/ longboard and I'm not sure how thick to make the board. I'm about 6'2" - 6'3" and weigh around 225 lb, so I was thinking I'd make the board 3.25-3.5 inches at its thickest. I'm not so sure about the nose and tail thickness though, and thought this community might be able to help out.

Thanks,
JTH