If you put an R2D6 in a y wing would be the EPT of choice? PTL? Not a lot of green on the dial to shake the stress.
A stress-generating EPT is not a good idea.
Predator for offense. VI is an option. So is AR.
If you're using a turret, gotta go with the one that gives you a bonus when you're shooting out of their firing arc. I think that's Outmaneuver, but it might have been Predator.
Sadly its likely to be neither as, unless they are being uncharacteristically generous to ships with turrets, I would have assumed the firing arc requirement to be there primary fire arc