I had success with this build:
Finn the Viking Champion
Knights of Weston x3
Racheim
Raelin 1.0 (510)
A Finn boost is very appreciated for Triple Attack. Racheim isn't really a master at anything, but is more of a "Jack of all trades". Don't tie him up into engagements all the time- a ranged flier is powerful and only use Triple Attack when need be.