Styx, Devi, and Murder are great choices, Im not too sure about the light cruisers for Chaos tho. I have never used the light cruisers because well the Slaughter is just too good to pass up and fits the bill nicely. for 45 pts over the Heretic you lose 45* off your turn, but you gain a shield; two hit points; two strength to your weps on each side; and two lances.
Strike cruisers with out a shield upgrade are poo-paper :/ and they're not much better with the extra shield from the FAQ2010.
Infidels are a good choice, they're torps will complement your launch nicely. Iconoclast have seen a boost with BFG-R but they're something I would still keep at home outside of a campaign. Idolators are kind of kick-butt now tho, they have the range to be useful with your capitol ships and the speed and maneuverability to put their lances to good use all for a fairly reasonable price.
That said your fleet doesn't sound bad at all to start out with, but I can see a lot of those ships quickly being replaced as your fleet grows.