How long have you been training, what is your height & weight, and what are your numbers on Squat/Bench/Deadlift? Why are you following a body building routine if you have no desire to compete as a bodybuilder? And you should post pics of yourself shirtless and relaxed, not flexing.
I personally would not bother with fat burning supplements, you are 18 and at the peak of your body's metabolism, you should be able to burn off fat fine without them if you follow a sensible diet plan. You are already working out what, 5-6 days a week? I imagine that your energy expenditure is pretty high already just from that.
And I dont see why leg workouts would affect leg drive on the bench.