Its easier if you just stick this at the end of your page controller init function rather than use the template
public function init() {
parent::init();
if($this->RedirectToChildOne && $this->Children()->Count()){
Director::redirect($this->Children()->First()->AbsoluteLink());
This feature is invaluable if one is using jquerymobile since otherwise the root page is invisible and its content has to be moved to be its own first child