The Search light, it's usually Terminator edition only, thus the jump pack can't carry you anyway. It's basically as massive as the Servo-Arm was, thus you can easily make it bright enough to permanently blind some people if you put it on maximum setting and right in someone's eyes. It's not a small one like Sirius Jules on his picture has for example, it's one of those super massives. http://wh40k.lexicanum.com/wiki/Photon_Beam_Searchlight
Spoiler: If Alderson makes it through this mission, I will actually see that he gets a modified Jump pack with XV-8 Crisis like boost powers.
The Emperor is not called until in 3000-4000 years when the Ecclessiarchy actually gets founded during the Age of Apostasy :X
I suggest Alderson either second to front or front since he has the light. Probably Silva next to him since he is the psychic one.
id sugest one close combat equiped marine at the front with a ranged brother beside him while the same at the rear (though vahn in the middle) and even though it will anoy the tempelar silva willproberly try and make you all invisible edit strike that im thinking invisibility dose more than it dose