Starting Cryx 15/25pt Scaverous List

[Alzer]

Well, I finally gave into temptation and picked up a couple Cryx models today. Scaverous is just too pretty a model and Nighwretches are my favorite chicken in the looks department. Threw together a bit of an unorthodox list with him for 25pts to build up to. Pretty much friendly-use only so I'm just looking for opinions and thoughts on how to use it.

For 15pts I'm looking at a basic grouping of
Scaverous
-Erebus
-Nightwretch
-Nightwretch
Min McThralls
Necrotech (free in tier)
Scrap thralls

25pts
drop the Scrap thralls
Max the Mcthralls
ILO
-Scavenger

From what I've seen Scav wants a couple arc nodes. Erebus is just too cool looking to leave out (plus that affinity is slick)
I was thinking to have the ILO and Scavenger sit back and stealth until they got an opening to combo up on something. ILO throws out dark fire for an extra soul, then sends the Scavenger screaming towards a wounded model.

My only real concern is screening for Scav. He's tougher than I'm used to...sorta. Seems like lots of camping until spelledy-death-time.