1-Get a boot that cuts your foot print and is comfy
2-@ 150 you can go with a ton of different sizes, try 153-155
3-You'll want a middle of the road in flex a 5 or 6 for most ratings. Only thing is you can't compare companies (a burton flex rating to a ride rating. completely different.)
4-bindings, rome targas, spi's, k2 formula, Tech nine is nice too. also check out forum(owned by burton now).