I think you should keep the farseer on bike, but swap the spiritseer for a warlock on bike.
Eldrad does not need fortune, those reapers already have 6+++ for being ulthwé.
And give the Autarch a banshee mask using the index profile.
Battalion 1: Ulthwe
Eldrad w Guide and NOT Fortune (for the Reapers) and Will of Asuryan
Warlock skyrunner, protect/jinx
Battalion 2: Saim-hann
Autarch skyrunner, banshee mask, laser lance.
Farseer Skyrunner w Doom and Fortune.