i am involved with pdr from the ins appraisal side.
check it out with the pdr shop too see if they can do it.
we have found that with older cars that have been repainted can cause troubles as we have had paint cracking problems when they remove the dents. i think the buildup of the material isnt quite so pliable when being worked by the pdr tools.
if there are just big dents you probaly will have good luck if they can do it.
the recent hail storm this summer we worked ,none of them were repairable as all panels were just completly warbled and just to much for them v/s regular repair.
good luck,doesnt hurt to ask what the shop can do. youe not out nothing then.