Well you come to the right place to start doing research. I'll warn you Vader is s costly costly project. And I did so mostly at bargain prices cause I like to find deals. I could've had a larger savings, paid off a credit card, or bought a used car. Instead I assembled my suit over the course of two years with tons of heartache and stress.
Would I do it again yes. Completely yes. I love my Vader. Though if I did it again I might spend more and buy a completed suit vs assembling it, I had very little help or a ice since most folks just buy a Vader intact. Standing there 6'6" with my lifts with the whole get up and the breathing fx and voice modulation, it's a rush.
So believe me when I say go for it. But at your age and with the priorities and life changes you'll soon have thrust upon you scholastically, financially, and socially. Personally I say start with an easier build one that costs less, is more durable, takes up less room, is easier to transport, and will ultimately cause you a ton if less stress. Go from a trooper be it a TK, TC, TB, TS, etc. less build time lots more help. Less fuss. And more freedom. Troopers get away with more then the boss does. Also waaaay more comfortable lol.
Trust me and you might thank me later.
Regardless cheers and good luck. You got time to figure it all out. And we got good troopers out there to help make it happen when that time comes.