Thoughts.
Fighters must be fast. Yours is a tad slow for the engine tech. Your fire control system has a tracking of 10,000km/s, that should be your minimum speed.
Fighters should rely on another craft lighting up targets with actives but a micro sensor isnt necessarily bad, and can often spot for a beam fighter itself.
1 weapons system or bust, at high techs you can get away with more, but not at low.
With missile fighters, you load them with shorter ranged but faster or harder hitting asms than normal, as they can approach closer.
With beam fighters, use a mix of weapons, lasers+hpm+mesons are a good combo (most in lasers).
Beam fighters are however often weak and have high losses. They are much better cleanup ships than initial strike.