Your best bet would be to pick up a used door from a salvage yard and replace the door. You would get the handle for free.
The sheet metal is stretched at this point will will never come out straight. Most body shops would replace the door because of where the dent is located. You would not want to put body filler in around a door handle. That location is subject to a lot of flexing because of the handle being pulled on.
Dollies, body hammers, slide hammer, a torch, wire feed welder, and proper experience at working with sheet metal to shrink it are what would be needed to get the metal straighten. That would still require some surface body filler, and as said above, most shops would replace the door because of the handle and the flexing of the metal in that location.