Caveat; if you don't like what I suggest ignore it.
-Thus may also join a trueborn squad all of your have room for him.
-Replace one of the 4x blasterborn squads with a third ravager -- Ravagers are cheaper and have a larger threat radius with dark lances. (this also ups your alpha strike lances from 5 to 8 (i.e., lances you can use on turn one)... statistically you need 9 to take out a wave serpent which does not have jink protecting it).
-Grisly Trophy upgrade; how do you plan on using the 5 and 4 man teams? If they are just staying inside the vehicle, then the trophy is wasted because they are fearless while embarked. When the vehicle explodes, (and when you need the re-roll) the vehicle is gone along with the trophy. For units not leaving the raider until the raider constitutes as a terrain feature grisly trophy upgrades are unnecessary.