Actually Pathfinder Grappling is rather simplified. The only real issue with it is that it's almost useless against larger opponents who have a much higer CMD (Combat Movement Defense) making things like grappling and pinning harder without appropriate abilities. Hence why I'm also thinking of multiclassing into Cleric in order to get the Grow Size spell, which will allow me to get around the grappling issue. Or make the monk a dwarf, who gets bonuses to fighting larger creatures anyways.