If you can't decide which people to choose, go with a shaman and paladin, I soared right through with them. Also, do training quite a bit to get extra money for the best armor, it makes a HUGE difference in battle. Cheerleaders and pets are optional. Not a huge difference but they help. If you do decide to listen to me and go with the sham and paladin. When you get the moves holy quake, and totem, spam them they are your best moves.
If this helped + if not, +
The fact that people have to be online to befriend them is dumb! I have NO way of knowing when to befriend someone unless they are in my tribe or I randomly see them.