This is the small Brother of the AS7-D-DC Shotgun-Redux Build. Lose your Arms, but dont lose your Firepower! Blagg
I really want to find a good dual LB-10X build for this mech. It seems to scream for one. Either lbx with missiles or lbx with big lasers and a slow engine. Yours, I think, is the better option. Edit: I would switch the AMS ammo to the head. You are still going to get cored in this alpha-centric world and that first 15 rounds should be coming out of the CT.