i'm a little guy and mine are 185s. but i have suspicions about shorter skis. so i'm crazy. this is a stiff ski. and if found the 175 great. yes, the 185 will be more stable in the deep, absorb shock better, make short turns not nearly as well, and generally be good for scaring the §hit out of tourists as you hum by far above a sane speed. so, if you're a lots of turns, controlled speed, more tree-ski and bumps kind of skier, the 175 will rock your best red knee-high ski socks right out of your boots.
if you're like me, well, the 185 sounds too good to pass up.
i'm 5'9" when i feel tall and 150#s when i have two steaks for dinner. never had trouble with a 185 fat ski, or a 190 for that matter.
as for bindings, if you've got the one with the riser, i'd recommend something like the marker free binding, but take the little white spacers out of the rubber air pad (this WILL void the warranty on the binding) before you install it. the rubber air pad helps to make the ski more cushy. with all that metal and wood, the ski can be hard on your foot soles.
if you've got the ski without the riser, i personally can't recommend anthing better than a marker piston. that's what's on mine.
spring for the 14.0 level. you'll like it.