I would suggest removing the Dagger, adding in another Stiletto if you have it. If not, I still say remove the dagger.
Switch the upped Vampire with an unupped vampire, unupped is cheaper on quanta, and both do about the same damage/healing once you have Nightfall and adrenaline on them.
Dusk Mantle: I made a version a little while back with no shields, instead relying on stealing a shield. I'm not sure how your experience is, but removing the shields might be helpful as they're fairly expensive.
Life Mark and Pendulums: I don't think pendulums would help much in this kind of deck, I tried pendulums in the version I posted, and the result was that the quanta balance was thrown way off.
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