LB2s are a but spacious, but couldn't pass up the opportunity for a fast fire long range shotgun. The TC1 only affects the ML, most notably their range, so it can be replaced for more ammo eventually. Plays as a mix between dual LBX10 and dual RAC5 MAD in terms of role, but with a longer engagement range. LAMS to fill out the tonnage and provide protection. Here's a version without Light Ferro, which uses the space for more heatsinks, ammo, and armor, at the expense of TC1 and LAMS.
This is an interesting build. It's pretty wild idea, and I'm a big fan of "simulating" larger ACs with several smaller ones.