Which heads for my 318 ???

Your expectations may be a little high. I don't think that combo will make 320 at the wheels , regardless of the heads chosen. How quick do you want to go? 320 honest hp at the wheels in a light weight A body has 11 second potential. The EQ heads are good. I don't know anything about the PC. Your rocker arm choices seem a bit pricey for such a mild engine. IMO, I would get headers and a converter before digging into the engine.