Replying to What size should i get? +K

I'm 5'10" and around 130 pounds. im looking at this year's K2 Kung Fujas because i want an all mountain twin tip that i can use everyday on the east coast. I'm not sure whether i should get the 169 or 179. I'm a racer (I use 184 GS skis if that helps) and i want something that can rip turns on groomers, ski well in the trees and occasionally be brought into the park. Right now i have 171 anthems from 2009 that i use as my everyday ski, but i find them too soft and i have a hard time getting them to hold an edge because of that. If you have any other skis that would fit my criteria that would help too.