I would drop all of the GM's Wargear, only take 5 GKT in the Retinue, and if you want Psycannons then use the real one..GKT are able to use them to full effect, unlike standard GK.
Use the points to beef up the GK Squads, 8 is a good number, and if they're in the Crusaders give them Incinerators or keep vanilla.
Use the points to beef up the GK Squads, 8 is a good number, and if they're in the Crusaders give them Incinerators or keep vanilla.