Colorcurvature's M4/K4 mixer... will give you a range of Kids through adults from Mike.

http://www.renderosity.com/mod/bcs/cols-m4k4-mixer/98820

It also fits M4 clothing to the resulting characters in one click.

It does require one small workaround for use with Poser 10/PP2014... You have to invert the state of the checkboxes in the "Conforming" section of the properties box. Other than that, it is dynamite! A MUST HAVE.