Replying to 181 or 186

sorry to make yet another on3p Jeffrey 108 sizing discussion. I am 5'10 and about 145 pounds. I have had a pair of Kartel 108s in 176 for the past couple of years and am definitely ready for a bigger size. the problem is I want to have these skis for a while and I may still grow an inch or two. I ski quite hard and fast in primarily soft snow or softer chop but am still doing tricks. I primarily ski at a resort in interior bc with a fair bit of tighter terrain but lots of open stuff to pin 'er on (red mountain). I know the 186 would be a pretty big ski for me and I am leaning towards the 181 but am very curious to see what ppl have to say