I basic-ed it with a STD 340 version of this build. It's feast-or-famine due to the close range loadout, the fact that the SPLs can be lost quickly if rude dudes start shooting you, and the fact that it can't close range quite as quickly as would be nice. I find the build is lolzy for variety, but the variant needs some help. It relies a lot on the arms to reach its maximum potential, and I'm finding that's kind of uncomfortable.
Well, there is not too much you can do for this variant. Other than this I find the Gauss build functional but a bit risky, and the AC10 acceptable. As said, this is one of the weaker chassis variant.