The weight recommendation is a minimum, and its just that.. a recommendation. Don't be worried you are a good bit heavier than the minimum. I'm 75kg and I'd never consider the TRS in 159. Even at 5kg heavier than you my decision would be between the 154 and 157.
I like the park and love hitting any natural features I can find, don't get the chance to ride much powder (and when I do I'll have a powder deck) and enjoy a more playful feel when on groomers as apposed to a stiffer board to bomb with. 154 would be my personal preference on the TRS.
Had a smiliar decision recently between 157/154 NS Proto, got the 154.
Completely agree. I am about 70kg (without clothes and gear) and would chose between the 154 and 157 on the TRS. No way longer than that.
For the AB it would be 156 for sure.