Installing fuel pump, Reg., MSD Need tuning tips

Im putting in a 255 pump 2day, adjustable regulator, and MSD with blaster coil. Right now im wondering if i should go get some new plugs and what i should gap them at? Also with the MSD on how much pressure should i run from the pump.

Some of my other mods that come into effect with tuning it are, 24# inj, with MAF Sensor, 70MM throttle body, trick flow street intake manifold, headers, X pipe, Exhaust...

Anytips would be appreciated
 
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