A nice PPC/AC10 Sniper build, with LRMs as a extra way of dishing out some damage to pesky lights. Make it thunder and rain, people.
I'm laughing a bit right now at your expense, but you did this to yourself Gauss ammo will not load into the AC10, no matter how hard you shove. Nor will it fire!
This build sucks... the 3x LRM5+A would not fire the AC10 ammo. Would not use!. Oh, on the serious side... LRM5 does not benefit too much from the +A since the cluster is pretty tight already, consider downgrading that and use the tonnage to get LRM ammo instead. Also, maybe you should consider BAP. Personally I think the arms are a bit too low, and the PPC would not be working too happily with them, but that's just me. Some people can make it work.