Gordonlightfootsbiggestfan wrote an answer about Line Sir Francis Bacon Ski on March 28, 2014
I am 5'10" and 190lbs, I have a pair of the 178s that I love. My ability range sounds much like yours. I moved down from a pair of 182 Bacons from several years ago, the pre-rockered version. With 108 underfoot I feel that the 178 is a large enough platform, even with the rocker. They swing around in the trees very nicely, and skiing them on both powder and hardpack I have run into no issues. Given your height and ability I would recommend the 178. The best way to know is to demo some, try them on a powder day or hardpack, I think you will find that these will become your everyday go-to ski. They are awesome.