You could run a stock ECU. The factory A15E ECU would probably do it, if you can fit 280Z injectors in those. I know that guys have run the factory S110 Z22E ECU on stock A12s & A14s.

No Cam Position Sensor needed, unless you want to fire the injectors sequentially (which makes squat more power anyways). Just fire them all the same time like 99% of new cars do.

You can run a points distributor but why would you want to?

There is more than one way to skin a cat.