Check out: http://store01.prostores.com/servlet...DER/Categories (from accessories for fragrances . com) for some glass atomizer options. Good atomizers should seal well, won't leak or allow significant evaporation. You could decant juice from your 4.oz bottle into atomizers of any size. It is completely up to your preference. I kind of like 10ml atomizers so I can bring them around. Hope this helps.
EDIT: Sure you could transfer samples of the same fragrance from vials to atomizers, I think many people do that, it makes sampling/testing easier.