Classic build reimagined. The 3HML are nice, I prefer them over 3ERML in terms of heat/damage and alpha damage, meaning that it's more effective at opening/killing components. You lose out on arm mobility but in the config shown you'll be able to get 2 lower arm actuators. the LMG ammo is enough if you use it only for open components and/or get a magazine capacity node. To free up space/tonnage you can also consider to exchange one AMS + ton of ammo for a LAMS, which makes the build hotter but it's still managable, or not run the KFX-S leg.