Instead of loading completely new kid figures into Daz, I should just be able to rescale my two main models, Victoria 3 and Michael 3, so that they have kid-like or teen-like proportions. As a matter of fact, I have been messing around with proportions a lot recently. I successfully created two teen girls, one in her early teens [Magdelena] and one in her mid-teens [Baozha].
I also created my craziest morph yet by tweaking and shrinking Victoria 3 so that I could get a fashion doll model. [And it really looks like a fashion doll, which is somehow extremely disturbing, despite my great experience with fashion dolls.] If I can make Victoria 3 into a 1:6 bobblehead with pointy little feets and gazongas bigger than her head, surely I can make her into an acceptable kidsy.