First of all... great deck! However, I suggest you go after (atleast) Emeth. As far as DM or Survivor, I would go with DM. Survivor takes a special type of deck: slow, thought out, block heavy as well as bluff heavy. In Survivor one false move could be your last. DM is more focused on killing as fast as you can leaving nothing left behind and finishing the battle as quickly as possible. I play using a Nightmare / Ulu Watu deck. High attack, many 2HKO combos and Ambre to boost my Tan-Man and Kolos
Thats my suggestion!