Try one of these 3 =).
Clover Trumpy License
Blue Clover Trumpy License
Orcs (a lot of people have this license YET TO ME IT SUCKS
)
When u go aoe u will mostly aoe Trumpies in AeW, therefore the Trumpy licenses are easy to level. Also keep in mind that Clover Trumpies are decent exp up to level 64 or so, while BLUE CLOVER TRUMPIES are good xp up to level 71-72 therefore u will have enough time to complete them.