I am gonna start a twink and i need help with classes,pets and lvl.

Classes--> what classes i should choose?

Level-l --> what lvl is best? I mean, i don't want to be a victim of myth users cus my budget it's limitated but also i don't want to get always out of mana and have to use passives attacks.

Pet --> what pet i should choose and what it's his price? I mean, my budget is around 2 mil for everything..

Thx!