rome reverb rocker

Hi guys, Just wanted to see if anyone can give me some help/advice on my board choice... I'm looking to get the Rome reverb rocker (last years model) and I'm not sure whether to get the 158w or 161w and whether there would be much difference between the two...? I'm approx 87-90kg, 6ft 1inches...

5'11", 170 lbs, size 10.5 boots. I mostly ride powder (particularly trees), and on non powder days I like to ride the mountain like it's a park, but don't actually ride in the park that much. I might hit a small-medium park jump every now and then. Looking for a board that is poppy and...