Help on choosing a ski

can somebody please help me choosing a new ski since my invaders have snapped.
Im 5'10 or 178cm
I weigh 70kg or 150lbs
I will not grow any more as i am 18 and am havent got any taller in about year.
My last skis were invaders and they were too soft for my liking.
I will also be looking for a light ski as it i really hard to huck tricks on indoor jumps and need all the help that i can get.
Budget will be a problem as i can hardly afford ski passes, taxi money, food ect and really just living off rich arab friends. lol. I have put aside around $450.
Also due to living in dubai there is not any pow so i will be looking for a park specific ski that will be 50:50 for jumps and rails.
ability apparently is a factor so-on rails= k-feds,450s, 270's on. jumps= 7's, mistys, lincons. Im not trying to be arrogant but i dont know what level i am as i have on youtube to compare myself against.
i have looked but after hours i havent really come up with much apart from ar7 and line chronics but i dont know weights for them.

+k for any answers and bumps.
thanks nsers