Rocker Panel Dent

I'm looking for suggestions/advice on how to go about pulling this dent out of my 74 Duster driver side rocker panel.

The car is stripped to the unibody, no motor, trans, harnesses or fluid lines, but the engine bay and bottom of the car are primed and painted in the new body color.

I have a fluxcore welder I know how to use, grinder, drill, and basic mechanic tools.

Please let me know what I need to get and the best way to go about it.

Thanks!
DD