HQ:
Inquisitor Lord
-scourging
-artificer armour
-refractor field
-psychic hood
-Psycannon
Retinue:
-1x familiar
-3x gun servitors (2 hvy bolter 1 plasma)
-2x sage
-3x alcolyte - 3 plas pist
+++ drop the scourging as the psycannon is much more reliable (and you can't use both in the same turn!)
holocaust makes for a very fun assault deterant, plus it's wonderful for laying the hurt on any 'fish of fury' tactics
('oh, was that 11 or all 12 fire warriors i just hit?!')
lose the plasma pistols on the acolytes too - with only BS3, they'll kill themselves more often than the enemy! either give them some storm bolters for yet more hot lead! or else tool them up with power armour and close combat weapons to act as cheap, ablative wounds for your lord!
a mystic is *highly* recomended in place of that familiar!!!+++
DeathWatch Kill Team:
Librarian (doesn't say he's epistolary so he's just librarian)
-artificer armour
-master crafted plas pist
-iron halo
-terminator honours
-purity seals
-bionics
-familiar
-storm of the emperor's wrath (free)
-might of heroes
+++ well, as a codicer, you only get 1 power... i'd drop the artificer armour due to how mixed armour rules work, and just go for a basic cheap set-up; bolt pistol + halo & termie honours. imho, cheaper is better for loyalist marines!+++
9 veteran DW marines
-5 pair lightning claws
-4 powerfists
Drop Pod
+++ oh boy! drop at least half your vets! they can't assault the turn they land and with each model being so expensive, losing half to a round of enemy shooting is going to hurt! plus, the unit to simply too good at assault; they'll wipe out anything and then get pummeled by another round of shooting!
i'd get those 2 heavy bolters w/suspensor units too - it's just evil having "assault" heavy bolters!!!+++
Totalling... 750 pts...
Elites:
Daemonhosts x3
255 pts
+++ keep them well away from your own guys!+++
DC Assassins x3
120 pts
+++ tasty
+++
for troops, i'd seriously consider some inducted guard as well your 2 mandetory units of inq stormies...
the guard will give you good numbers and added heavy weapons! don't forget that platoon command squads make great special weapon squads too... (3 plasma gunners and a medic is very effective!)
as for a russ, just outfit it with heavy bolters all 'round. you could even add-on a pintle stubber for even more fire power if 9 shots isn't enough for your tastes!
also consider a sentinel or two... again, for daemonhunters, the fact they can take lascannons makes them good, cheap tank-hunters. something daemonhunters generally lack!
hope this helps,
cheers!