My only real balance issues are that 6+ Prow and the NC (No NC's or 0-1 NC would be fine). The 6+ Prow allows Chaos to shield thier weaker cruisers giving them a nice bonus but killing thier speed a little. However except the Slaughter(which needs its speed) and the Hades(/murder) you'll want to be circling your enemy at range. So the only real use will be protecting a Hades, if the ship also had a NC that would be pretty hefty!
Mixing a Lance Dauntless in with a Murder works okay, but to be honest there are far better squadrons to pick in the normal list! (mind you a single Murder with 2 L Dauntless from the bastion list works quite nicely)
Fluffwise Chaos could have the Dauntless, Lunar, Tyrant, Gothic, Dominator, Dictator and 0-1Armageddon as reserves in rough order of likelyhood.
Cheers,
RayB