I will second Durock V2s and TX AP/Rev3 or rev4 stabs. If you use TX make sure you use the "plugs" - the little wheel of snap-off bell-shaped pieces that hold the stab in from behind since they do not screw in.
Also double check your PCB thickness, 1.2mm vs. 1.6mm and make sure you get the right size.
I've only played D&D for a couple years and don't have extensive experience with githyanki lore but my impression is they're not so much bent on genociding other races as they are exterminating the mind-flayers that enslaved, tortured, and fed on them. Everything about the structure of their society and their philosophy on the value of life hinges around that. They became hyper militaristic - only the strongest and most capable are valued. They seem to regard other races as largely weaker or simply unworthy/uninteresting, but aren't looking to kill or subjugate them, they're just irrelevant.
I'm only ~near the end of Act 2, but Laezel's development has been some of my favorite stuff about the second act.