That's quite a nice guide! Fiends are definitely an awesome addition and can be the difference between a win and a loss in low mana games.
I'd say getting a level 2 Chwala isn't that great in this case, as you won't be able to use him without a Dragon summoner that's either legendary or higher level.
!1UP
Thats entirely true, I figured that since the CP is too high, and is the most cheapest tank in the market, as soon as you get some Quix would be useful :)