I will also point out that it is not over-armed. If I recall correctly, it carries 100-odd turbolasers. A Dreadnaught, for comparison, carries 10 Quads, 20 Standards, and 10 Batteries - that's a total of 60 cannons, plus 40 if you count each barrel on the quads.
I did ask the staff about the ships before I built them, and they said go ahead.
As for the Liberators, I can't find the stats I used for them, and I've never used the ship in RP, so do whatever you like with them.
Cheers.