I recently was gifted a box of 100 8x10 old stock but still viable Kodak Radiance paper, for colour prints from transparencies.

I do a b&w first developer in a tray in absolute darkness (time/temperature/dilution to first develop versus time to expose is a matter to work out with the developer chosen). Water rinse and then optical re-expose after first 20 seconds on the water rinse. I then feed the wet print into the regular RA-4 chemistry in my roller processor for the rest of the processing.