Yes the stock carrier can hold the weight. The important thing is that it is tight against the rubber snubbers on the gate and tub. Depending on the backspacing, you will have to cut or space the snummers out. I've had a 33 for over 4 years on mine. I moved out the snubbers with hockey pucks. You should not have to do anything with the light. You could see it over my 33
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.