i'm not sure, but everytime i try and press it shoots me back down because i don't have the leg power/weight to keep it pressed.
but i've thought about it and would 5cm less really make that big of a difference?
Strengthening your legs as well as your core will help with your lack of butter ability. Also, general progression in the sport will.
Back in my more crazy days I rode a 147 ride kink. I was 65% jibs 25% jumps and 10% wherever. My hill also only has 900ft of vertical, not exactly hard riding. The 5cm difference can be huge. If you ride on a mountain with any decent vert and still want to ride the mountain at all, I'd stick with a 152. Just my opinion