Went to my local ski shop and asked them a few questions. They told me the skate banana in a 156 would be pretty much the same setup im running now. And my buddy skate banana I rode was a 152. Which is much smaller and that why I noticed such a differance. They refered me to the new Burton Nug in 146. Its made to run 8-10 cm smaller than what you normal run. So ill be keeping an eye on them at the end of the season.
How about an Arbor board? Westmark/Blacklist, Coda. Very very fun boards. Never rode the Lib Banana but arbor rocker is sick, and works.
If you really want the Nug (never rode one so I don't know) another to look at, and only because you can downsize on it, is the Rome Shank.
2013 Rome Shank Used and Reviewed «
BA rode a 149 and had a blast. He weighs exactly the same as you. If I'm bored I hope to find a late season deal on one. Not sure I feel comfy being on a 145 though (145 lbs)