Does it work? Is the sizing right, does the resin match? In case you couldn't tell I'm rather enamoured with MNF bodies...but I'm not sure about the head yet.
Do you want female or male MF body? I've got several boy Tiny Fairies and a MF El here. I can tell you right off the resin will not match. BF's resin is darker and more pink. I personally am not liking the MF boy body at all, it's incredibly kicky and hard to pose. If you're looking for something more mature for a BF head, their male bodies already are and they have the blossom bodies for girls.
I am just in love with the female MNF body is all, and searching for the perfect head, so I was looking in the BF direction.