I don't think it's overpowered in combat. I mean, maybe it's overpowered when fighting NPCs in other small ships, but you still aren't going to take down a master-ranked NPC in an Anaconda. Well, at least not in any reasonable amount of time. The medium hardpoints limit how much damage you can output.
(I actually made myself a multipurpose build with the MkV in order to do PP2 missions, for which purpose it's just superb. And while it's extremely capable in combat against other small and even medium vessels, I quickly started just skipping those dangerous+ level Anacondas. Just not worth the time. It's like 10 minutes of combat-grinding, emptying your entire ammo stock on one single ship. Just not worth it.)
