Well, it's only carrying 2 tons of missiles, meaning it has 8 rounds of sustained barrage from both LRMs.  I really don't know how long that lasts, but I have a feeling 8 rounds isn't long. Admittedly, if I remove the ER PPC, I can fit like 3 medium pulse lasers.  But I can't fit more than one Large Laser, or ER LL.  Hilariously, I can fit 5 medium lasers though, and another 2 tons of missiles.