Hi, david, welcome to 'Mechspecs. I'd like to suggest a few things for this build if that's alright. I actually wouldn't recommend chain-firing LRM5s, mainly because a single AMS will essentially take them all out before they reach their target. You might find you get better results firing them as a single volley. Also, 3 tons of ammo seems very low. You could drop the ECM and/or the CAP for an extra ton, or you could reduce the ERLLaser to an ERMLaser, and pick up a few extra tons there. Additionally, if you decide to keep the heavier laser, you could try switching to a HeavyLLaser, for the added firepower.
Interesting approach. I agree with Falconium. Although, the BL part does restrict who can get their hands on this build. On a housekeeping note: "+OMNI" is for when you are using all of the parts from the same mech to get the Omni Bonus.
The bl part is unnecessary, you get the same out of the D side torso, and you already need the reinforcement to build this.