Hello everyone, I'm currently in off season for powerlifting and I wanted to know some training some of yall do, any supplements I should be taking, any advice will help I have till February on 2018 to acomplish this goal. This is my second year powerlifting and I've increased my deadlift from 325 to 540 what it is now in a course of one year while maintaining the same weight.

Current stats are
17 year old
5'7
132 lbs
Deadlift max is 540×1