You use the inferno for capship shield then BR on hull. For fighters you want to use your 3 Zoner turrets to hit them, while occasionally firing your missile turrets when you think they have a chance to hit. It helps if you know how to use weapon groups. If so, make your 3 destroyer turrets as group 1, the missiles as group 2, infernos group 3, and BRs group 4. That way you can use the turrets on fighters, then just hit the 2 button (or whatever you have assigned to Fire Weapon Group 2) and it'll launch them.