Been using this to skill through the Kitfox. Plays like a jumping Raven 3L 2 x ERLL setup, except the arm mounted ERLLs are a lot lower on the Kitfox than the Raven which can prove problematic.
Overall looks like a great build but I would replace the second ERLL with an CSRM-4, 1/2 ton of ammo, an ER ML, and a couple more JJs as well as another DHS if it would be possible.