Snowboard Sizing?

Goodmorning yall,

Recently I have fell in love with snowboarding I go about 5 times a year mostly in NC and a trip to Colorado each year. I want to invest some money in a nice board.

I am looking at the GNU Banked Country C3 2025.

I am 21 at 5'10 170lb size 11 boot. Should I buy the 159, 160w or 162? And why?

Thank yall for yalls help!