this is how i decided to sort it, excuse anybits that dont make sense, copy/paste from a blog
well managed some work on the chaos fleet, some of the ships might not look like the pictures in the book but thats so i can see what a ship can do just by looking at it, each different lance corresponds to a certain range and there is a lance turret for each point of strength, made the hecate a bit fiddly adding 2 turrets to the prow but i like it. not looking forward to adding a squadron of murders later on though.
made a chaos light cruiser just to see how it looked, after a bit of cutting and drilling i ended up with a schismatic class light cruiser



also went for an emasculator, if horus lets me this will be a character ship with chaos lord with mark of slaanesh and a couple of chaos refits which the chains represent


following on from slaanesh i went for a nurgle marked carnage, this will have a plague bell added as well as a load of green stuff to rot it up a bit


as with our imperial fleet we will allow just about anything from the additional ships compedium and book of nemesis etc so i made a hecate

so so far i have made a styx, 3 devestations, 3 carnages, a hecate, an emasculator, a shismatic and an acheron



as you can see, i went with the not sticking to the rulebook pics, much easier to see what a ship can do for me as well as easier for new players