I'm looking for some advice on my first pair of skis. Skied 1 time at the end of last year and was amazed at how well I was able to ski my first time out, progression through the day was very fast and I was skiing advanced and expert trails by the end of the day.A ski patrol friend of mine was coaching me all day. I have been researching skis for awhile now and have decided on the K2 Apache Raider, I am 5' 11" and 215 lbs, athletic and 54 years old, not sure if this is too much ski at this point but I really don't want to have to buy another pair next year if I keep progressing. Not sure what size either, 170 or 177, I'm thinking 170. The skis I used last year were rentals and were no more than 170. I live in the northeast, any advice is appreciated.