Hmmm....I'd probably say PMK, if the Wing-Lynch weren't throwing a wingnut into the equation. I suppose you need something replenishable, eh? That would rule out most varieties of pyro and other one-shots and developers that are very prone to oxidation.
Probably some flavor of HC-110, I'd guess, and Acufine as an alternative for speed.
Fixer? TF-4 cuts down wash times if you don't use Permawash, but if you do use Permawash or HCA and you're not using a staining developer, there's no particular reason to use an alkaline fixer, so Zonal Pro Rapid Fixer or Kodak Rapid Fixer would do fine and cost less.