here is the problem I find with mechs that have more than 2 ballistic hardpoints in the same part of the mech. 1, they can be used with 2 small and one large weapon, and be a brawler build 2, they can have similar weapons in there, But it's weight is so great it makes the mech a sniper. The downside to number 2, with this build, is that when you are dis-armed, you have no more weapons. The downside to number 1 is you don't have quite enough punch to get thru enemy armor without using an alpha strike. I think, with these opinions in mind, that this mech is a 3-5. If it had AMS, I would be happier.
Makes for a great ranged weapon. Click the AC2 twice, lead, hit the AC5. It does suck that they're all in one arm on this Chassis. I tried a very similar build and ended up dropping the AC2. If it fits your playstyle, though, it's deadly! I'll give her a four. Chatt.