I would suggest a MEC Press, CPS or Holland’s priming tool, Redding type S dies and a TRX-925/Dandy trickler(or Autotrickler/FX120 scale) for powder. Definitely use Creedmoor Sports or Imperial case wax for case lube. That should get you on the right path.
When you say benchrest, I’m assuming you mean best accuracy from the bench for your 300 PRC. If you mean benchrest, this answer will change slightly.
I’m also assuming that this is a best quality rifle built by a best quality gunsmith. If not, there is probably too much equipment there.
Remember best dies are not by brand or by name. They are by how the sized brass fits your chamber, flexibility and runout of the loaded round. If true benchrest is your goal, you should consider having a chambering reamer and sizing die reamer made to match your chamber.