Originally I ran this with a cERLL but found myself running dry a lot. I dropped it down to a cERML and used the extra tonnage for ammo and I've been very happy w/ the results. This is probably my deadliest mech. I run it w/ 3 weapon groups, all the LBX5s in G1, cERML in G2, and the arm mounted LBX5s in G3. I keep armlock on most of the time for maximum accuracy when firing all the cannons at once. At long range I switch to chainfire on the cannons and can harass the enemy with a lot of cockpit shake as I close then switch to group fire and blast away when I'm closer. Edit: I had the armor values wrong and and extra half ton of ammo in the original I posted, I've also modified this to use the Prime CT so I get the cbill bonus, just had a 6 kill 420k cbill match in it.
4/5, I ran this as an alternative to the 8 LBX2 Ultraviolet. It plays quite different but still racks up crits and has the ability to twist rather than needing constant fire to get its damage.