I'd say SW in front of IG, get a good amount of indirect fire, 2 basilisk and 2 mortar sqauds, maybe a HQ mortar as well. Keep a demolisher tank for annoying termies. I'd help give some point disbursements, but not sure how many points your are playing with. IG take a small amount of RR for IW and ogryns for DE as a counter attack to help out SW lines. Use SW scouts to take out annoying basilisk/tanks from the IW. So if you can manage- 2 hellhounds, 2 basilisk, get plasma where you can