Replying to Armada JJ ski size question *sigh*

So I know the saying "never buy a powder ski that's shorter than you are tall" or whatever but this is a viable question I guess. I'm 5'10, 145 pounds and charge pretty hard. I work at Eldora and ski alot of trees, groomers, some bumps and am always ollieing and pressing everything.

I need a powder ski bad and found an awesome deal on craigslist for 175cm JJ's.... would I be totally screwing myself with that size? There's alot of tight trees at Eldo and it's not like I'd be only skiing deep pow here in Colo anyway... I feel like 185 would be ideal for me in powder but I want a ski that's a little more playful. What do you guys think? would I be alright with 175?