honestly i'd drop the elite inquisitor and tool-out your lord's retinue for shooting... trust me, a S3/T3 IC sucks in assault! his retinue simply doesn't have any real staying power, mainly due to the mixed armour rules...
i usually try to keep a pair of acolytes on hand though as they're
a) very characterful!
b) dead handy for using as ablative wounds!
oh, and i must mention - your lord wants holocaust. there's really nothing like throwing out a pie-plate in the assault phase! and you don't even need to be in base-to-base to use it;P it's dead handy for breaking through say, the tau 'fish of fury' tactic!lol.
of corse, as you know i'm a huge fan of the culexus assassin and i recomend giving him a try simply for his psychological warfare potential!
i really think you should look into adding some inducted guard though... you'll find that storm troopers just can't cut it once they start coming under any kind of semi-concentrated fire, and the extra bodies from an infantry platoon can really help out! (not to mention their heavy weapons!!!)
oh, and be sure to check out WD287 for the radical wargear chapter approved article! it's nice to have some of the enemy's toys to play with too
welcome to the dark side! you're going to love it more as breaking rules is always good fun.lol.
cheers!