Ok cool, I was not sure about the surface or scot skis. Are you planning on also upgrading boots and bindings too? Boot wise your pretty well set, those boots should have the adult norm sole, so you could upgrade to an adult binding. How old are you? If you are around 13-14 then it may be time to move up to adults gear, but you certainly dont have too. Kids gear will be cheaper and generally ski for someone your size, better then an adults ski.
Maybe look at the Armada coda, the K2 bad seed and maybe somthing like the salomon thruster (technically adult, but foam core and very light)