Replying to Oh Noes! Another Hellbent thread!

Yeah I know, there's a butload of hellbent threads already, and I've seen 'em all.  But I still can't decide between the 169 or the 179.  I'm around 5' 4'', 125lbs(keep in mind I am still growing), and will be using these skis for  pow days at my home mountain, trips to revelstoke, and mabey the odd park run.  I know they ski really short, but do they still seem short even in deep snow?  And also, how much heavier are the 179s compared to the 169s?  I want to be able to play around in the pow, not be dragged down the hill.  Any help is greatly appreciated.