Replying to Another thread on choosing the right park-ski length.

Thanks in advance to those who respond!

I'm 5'6.5 (195lb) and ski all mountain west coast (Park + On/Off Piste equally). I'm trying to get a new fat park ski that I can still use out of the park and am wondering wether 170cm or 178cm would be more appropriate for someone who is advanced at all mountain skiing but relatively new to the park, given my sizes.

I've had 171cm Line Blends before for all-mtn/park and those felt fine all around but I now ride 175cm JJ 2.0s for all-mtn/powder which feel about as long as I'd want a ski to be in the trees. What do you guys suggest for park-dedicated skis? Shorter or longer than my all-mtn/pow set up?