Couldn't you have all the warriors under a single CAD and have the Ravagers as an unbound detachment? It's not the Ravagers benefit from Objective Secured anyway.
It saves you a whopping 20 pts, but you never know when that might come in handy, and it certainly makes the list a lot easier to read. :-p
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Worry not about Chaos; it is the used 40k market that shall be thy temptation.