on the softer side of medium? i have a 159 mtx trs, no banana, and the thing is made of slate, its like riding an angry 2x4, it just wants to go fast, and it pops my hip out before i can really get into a butter. but i am 150lbs i just took a casi instructor course and actually practiced carving a bit, and it is nuts, the trs can lay down rediculasly fast pencil line turns with its agressive magne traction and never slips. and my edges are sanded down. it rails like no other. i would recomend it if you dont wana do rails and fancy slow butters and stuff but highly reccomend it if you wana race and kick the mountains ass.
Sounds like a lot of fun I've just picked up a157 an I'm 175-180lbs so the board should be the perfact balance, should still go fast an hard but with that little more weight will be alot more fun an playful, shit I can't wait!! Go the TRS!!!