2002 Astro with random misfire (P0300) -replace distributor?

Hi all, I have a 2002 Astro with 166k that is new to me and came with a misfire issue in all cylinders P0300. Also throwing code P0341 "Camshaft position sensor 'A' circuit" . From doing research on these forums it appears most likely culprits are either worn distributor gear or chafed main wiring harness. Any insights into which I should chase? Something else? DTC report attached



Thanks!