Replying to Armada tst

I am 5' 7 and growing, i weigh 130lbs and would be getting these to ski trees and all mtn in the east coast at smugglers so i do get powder. I was looking to get the tst. My main questions are what size to get and is this ski stiff enough to charge but nimble enough to ski tight trees. I was drwn to this ski because of its rocker profile and dimentions. It has a fery low turning radius but im worried its too low. Any help would be greatly apreciated, also i apoligize for any grammer mistakes i did this on a touch screen