To solve the first problem, I've build these guys: a squad of chosen armed with flamers. A squad full of templates is a fantastic tool against Orks, Tyranids and other horde units. If I get the infiltrate trait (or take Ahriman), I can image a lot of fun going down.
The models are mostly based on Space Marine Sternguard, with some 30k Flamers, Chaos backpacks and Thousand Sons/third party bits thrown into the mix. The Chapmion is a Chaos Sorcerer with a power fist and bolt pistol replacing the standard weapons. The bases are MDP Chapel Ruins in 32mm.
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