Hello everyone

I'm a recent starsector fan, been playing it non stop after work the past few weeks. got into adding mods to the game to extend my enjoyment, and decided that my first run would be exclusively Diable Avionics. I created an account today so I could ask anyone going through the same kind of challenge a question.
I'm currently doing IBB missions just for the heck of it. checking out the various ships you get from these engagements is fun and rewarding, but the big fun of it all is the combat itself. I was having a great time stomping most encounters with a missile specc'd Maelstrom complemented by most of the other common ship types in DA's arsenal, when I hit a wall. there's a bounty mission where you have to fight an entire fleet of phase ships, and I just got
wrecked. Most of DA's fleet have all their focus on the front of the ship itself, so they are super vulnerable to attacks on the engines. those phase frigates do nothing but attack my ships at the rear, and I'm having a hard time finding a counter. the engine gets blasted, then you start spinning through space, then you don't have the ability to counterattack anymore due to all your guns facing whichever direction your ship is. then you just get tore up 3 vs 1.
What sort of recommendations would you give on how to handle this engagement? I was thinking it might be possible to outlast the fleet since they don't retreat, and the phase ships are pretty well known for losing their combat readiness pretty quickly. Should I just field a dozen vapors with maxed out defenses and try to outlive them?