I've just now decided to start backcountry telemarkskiing and was wondering what length of ski i should get. I'm 6'1, 175lbs, and 17 years old. I've only been telemark skiing for a year or so but I'm picking it pretty quick because i've been downhill skiing for 12 years and I'm young and dumb. My downhill skis are 179 Line Prophet Flites and they seem to be the right length. So for backcountry tele skiing i was thinking 180-185cm long with a waist of 90-100mm. Is this a good ski for me?