Yeah thats some good recommendations
Im abit worried about the range on chaincannons (I include the movement of 6" and it will still only be 30" maximum a turn.) and on top of that the extra point cost. But ofcourse they are a more powerful choice otherwise.
Noise marines is something that I will probably drop along with the chosen and maybe replace them with bikers instead.
The Chaos lord will probably stay for benefits of the rerolls of 1s for hitting on backline units.
Lascannon havocs is probably something that I will pickup instead of some of my choices.
But thanks overall