I just turned 15 years old and i am thinking on going into a powerlifting competition and possibly even thinking about breaking the deadlift record for 15 year olds.
My Lifts are

Squat: 240Lb
Sumo Deadlift: 300Lb
Bench: 185LB

The only problem is that i only weight 107, What is the lowest weight class i can join at my age?