Yeah.. the only real special thing they had was no access to tanks, Wulfin, no blood-claws and army-wide scout. Asthetically, you can do whatever you want.
Keep in mind, there really isn't chaos parts in 30k. Everyone is sort of the same. The 13th company disappear after the siege of Prospero, which takes place before Itsvaan. So, they would already be lost in the warp, long before any of the chaos legions turned..well..chaos .
It's not really until the end of the Horus Heresy that chaos folks start becoming chaos. For a large part of the war, folks all have the same power armour, it's just a war of ideology.. Besides the Word Bearers, who the Space Wolves don't even fight. They fight the Thousand Sons, and then are stuck in space battles with the Alpha Legion for a while.