Honestly, I would rather have sensors either on armored carriers or on sensor fighters without weapons.
Your speed drops too much with that sensor.
Well, ok, you won't actually use them (or sure as hell shouldn't) before Ion Engines and another level of fuel efficiency, will probably increase their speed by two thirds, but still. Never build a fighter below 5k, or your main ships will soon be faster.
You might be able to size the sensor down a bit, seeing how it's more than your weapon range, if you really NEED one on every fighter.
Also, keep in mind you still need good passives or actives to find the enemy in space.