bad idea. the bigger the panel you have to weld in the more warpage you will have, keep it small use small fill panels and take your time welding.Check this out.
Now, if it were me shaving the door handles, I would go to a junkyard and cut out a patch panel to cover up the holes left instead of welding in three different patches.
Basically, draw a line from the rear of the door, bottom of the handle all the way to the front of the door in a straght line.
Do the same thing for the top of the handle.
Cut a bit bigger then you will need for the patch.
Once you cut out the metal that held the handle in, use that as a template to cut out a clean sheet that you got from the junkyard.
At this point, if you can't weld, you might want to bring it to a pro.
The idea of using a Bronco/F-150 door is the best because all of the lines and thickness will be the same.
True and I was not 100% clear.bad idea. the bigger the panel you have to weld in the more warpage you will have, keep it small use small fill panels and take your time welding.