does whatever a spider cat does. on the ceiling, on the couch. look out, it's spider cat. BTW, stock mech comes with A+. easy enough to just ignore that.
The quirks are for ERPPC, not ERLLas. And since we're talking about quirks, this build would obviously be better on the -8Z variant (with LLas quirks: -25% cooldown, +25% range and -25% duration. Except if you want to benefit from the -12.5% energy heat generation from the -10K, but I'm not sure it's needed for only 2 LLas.