First I would switch 1 Zombie to 1 skeleton.
1. Skill : Dirty Player on skeleton
2. Skill: Block on Mummy
3. Skill: Block or Guard on Mummy Nr.2 (depends on the other races)
4. Skill: Block on a Ghoul
5. Skill: Block on Ghoul
As for a Double 1 would choose Frenzy for a Whight