Can you post a beam diagram for reference?
Despite having above average shields, the damage seems a little anemic to match what comes to mind for a knife fighter. For this ship, I think I’d be tempted to push the point defense beams up to 1 point of damage each so that you aren’t loading most of the offensive capacity in the long range beam. This would also give it the rough damage output of a light cruiser while keeping most of it at very close range.
Some leg work that would also be good to do, since you have changed the top speed away from the norm of 0.6, is figure out the warp power % that makes the ship match relative pace with a standard speed vessel.