Well, I think that the 1st thing you should do is find out what the squad options are nowdays*.
And by nowdays I mean what's listed in the coming codex, not the free index rules (wich will disappear the day the codex lands).
These options may be the same, might be different, I don't know. My book will arrive to the shop & I'm not currently running generic Chaos anyways - so looking for a leaked PDF hasn't been on my to-do list....
Once you know the options? Then decide.
Personally? If the options they're already built with are still legal in the new codex ? I'd finish their paint jobs & just play them that way. Odd weapon/gear choices will definitely make them "your dudes".
Now future squads? Those might get armed more optimally.