I have also spent about 10 days on the insane nordica Firearrow 84 EDT and if that ski didnt weight 200 pounds I would get a pair this year in a 176 or 184 cm. I could not tell much of a difference between the 176 and 184 and mach 2 speeds.
I am 5'11 195 strong skier and looking at the chrome in a 178 or 184 cm for my next winter toy.
Ski hard or go home. let it snow, let it snow , let it snow.