It's quite a bit insane. After I read of the method to avoid the stupid pre-leveled companions I went from lvl 5 to my lvl 2 save and recruited again. I had no Thievery in the group and that's hard.
I want Sebille as Ranger. There is no good way to make a Ranger in my opinion. I don't want Arrow Recovery but Far Out Man and I also want Thievery 2 (level 1 is not much worth). Can not be combined. In the end I made Sebille a Shadowblade, the Guerilla talent is not my wish but I have to live with it. Such a waste.