Im picking between nitro optisym 159 cm (2026) and gnu riders choice 157,5 cm (2020). I am an intermediate rider and I ride all mountain and park (working as park crew this season). Both boards are used and priced similarily. I believe 159 cm is a little long for me since I weigh 66 kg (145 lbs) and 180 cm (5’11), but it’s obviously a newer board. Any input?