I don't have any of these Disney V.I.P. dolls yet, but I wanted to point them out as having articulated bodies AND heads that I would relocate onto larger bodies. However, I do think that there is something muscular about the thighs on these dolls so you might want to consider them for your characters who participate in running track. Nice thing about that is that there will be more body variation.
What about the larger heads? I'd see if any My Scene doll bodies would work with those heads. Or possibly even one of the action figures? I like the Rocky and the CeCe faces although I would probably "fix" the eyes so that they didn't look so very cartoony.
