Spot on that Cyan
Dolls Forever, Piper and Dollhouse 168 are all made from the same TPE. a key variance between them is that some DH168's have non M16 head connectors, and Pipers have fixed heads.
This make in all three brands is great but I will say that they have a high oil content and for the first year they will leave marks on bedding, furniture, and walls so you need to protect against that.
Personally I wouldn't do whtat you intend to with / to one of my girls but if you are going to do it then the head you want is WM #130 which I believe is commonly a second head choice (sorry, I'm already changing manufacturers here). If you pick a girl with a closed or only narrowly open mouth there is a strong likelihood that you could damage her face if you do to her what you intend to.
A WM head that you may be interested in if you are attracted to akira is WM #153 which has a similar sweetness to Akira. Maybe go for a 148 body. Maybe also check out heads #36 and #31.
Of course, those are WM's, not D4E group girls so are very diffferent in feel and scent.
All of these girls are works of art and the intent thatyou have now may, I hope for her sake, disappear when you actually see one close up.
Shamus.