Very good combo you had there. May I suggest having a blacksmith on the team, as well as keeper of the sky? Also, if you have party team, you won't be so short on time with the neutral bosses. I can imagine killing dark arthas, agiel, and dark knight won't be impossible with those heroes. If you are looking for players to your team, I would be interested in playing with you!
Thanks for advices. We will try :)
Our English is very bad , it is difficult to communicate with you in game