Nyraddin System

Don't get angry, but can I suggest you move these worlds to castellan, that is a sub serctor at war so you would be able to have big armies and what not. The populations may not be as high as you want them to be but this shouldn't be to much of a problem for you. You do need to sort out the SR bit, but if your having trouble i dont mind giving you a hand.

EDIT
Or as zholud seems to have indicated that another hive world is welcome in Meksum try doing that.