Staring my first AoS army? Wanting to start my first AoS army and the Sons of Behemat have caught my eye. Bit of a newbie and coming from 40k but dont know much about AoS. Is it feasible to run an only Sons army? Or is it better to mix them in with another army?

Also is there like a minimum point limit for these guys? Thinking of starting small (500-1000 points) and smaller battles with a friend but not sure if these guys can do that.