Well...my personal loadout for almost a year was:
3x class 3 pulse turrets
2x class 2 rails with Plasma Slug mod
The nice things about this loadout are
1) You only have to actually aim the rails, and they're effectively hitscan
2) The pulse turrets sip distrib power so you can go 4/0/2 on your pips to keep your shields up and still keep your guns firing
3) Both weapons have effectively infinite ammo so...
4) You can take this loadout way far away from civilization (on an otherwise exploration-focused build) and still have solid firepower.
Also I know you didn't ask about it, but I cannot recommend Guardian Shield Reinforcements highly enough, even on the Kraits. Combine them with a Thermal Resist shield, 2 High Cap shield boosters, and 2 Resistance Augmented shield boosters, and you can easily get over 2000mj of shields (after resistances). With this much shielding you can all but ignore DPS and just outlast everything in PvE. Granted, they're much more useful on small ships like an Imperial Courier, but Class 3 versions are still very good on a Krait MkII or Phantom either one.