P2Pool Payout Addresses vs Worker Addresses
Through trial and experience, I can now answer this question myself. I decided to NOT use a payout address for my p2pool command line, and only used dash core wallet reception addresses for my worker names, but each worker address is address+difficultNumber. It's working fine and reporting well in the p2pool web page, whereas it wasn't reporting things before using the above initial scheme. It looks like this arrangement will be more profitable than the previous one too.