Good design, but: turrets are in awkward positions, weapon computers are hidden (not good), instead of double missile try missile/damage beam for lock on missiles. Also always provide cannons to the main ship, as I feel a ship this size has no need of turrets, it has high mobility so they are really not needed. Lighting is also a bit overwhelming inside (too colorful). The cloak is not very useful: it consumes a lot of power, lasts 5 seconds (according to desc.) For an improvement try reducing the number of turrets to 2 or 3 if you feel they are really needed, turn the damage beams into a high rate of fire cannon. Also fill your hull completely, try adding Ion for shields. Overdrive is nice as always. Jamming is also useless with a ship that size as well. Overall, you have a nice ship but it needs optimization in weapons, turrets, and internal systems.
I usually leave some empty space to leave room for customization on the customer's end. I went overboard on the turrets because they are meant to scare more than actually hurt. It is a star trek ship, after all.
I chose sniper beams because I wanted a high alpha damage, medium DPS option. The cloak is less of a viable option and more of an act of desperation, but the option is there.
Jamming is easy to do on ships of any size above 100 mass, so I usually go overboard on power to make it happen.
Thanks for taking the time to write a detailed review - few do.