In reply to Nevis_Ben:
Hi Ben.
I wouldn't rush into buying skis with a touring set up just yet as there is a big difference between skiing on piste and then off piste/touring which is quite often in sh!tty snow for at least some of it.
So your parallel turns need to be bombproof even on steep slopes in all types of snow - that means icy, bumpy and powdery as well as nice and smooth first thing in the morning.
I think 181 will probably be too long for you right now, but once you get into skiing powder it'll probably be about the right length. If you go too long too early you are just making it much harder for yourself, and technique wise you will hold yourself back.
The first bit of kit to buy is boots, as your own will fit much better than some rental ones, and this will make a bigger difference to your skiing ability. but again I wouldn't rush into buying any as right now you will need some that are fairly soft, but as you get better you'll want some stiffer ones to help you stay stable at the higher speeds you'll be travelling at.
So in a nutshell buying too soon is a false economy as you will progress out of your kit. Buying stiff boots and long skis too soon though will hold you back.
Before you fork out on a touring set up have a go at it a couple times on a couple different pairs of skis and see what you like. Once you feel ready try skiing just off the side of the piste so you get used to skiing different types of snow and see what kind of skis you like.
Hope that helps!
Ali