Hello mate,
I read your project description and understand exactly what you want. I have many facial constructions in 3D in the past. I'd like to inform your that you'll have to send about 10 different pictures of your face from different angles in order to make it realistic.
I have my own 3D male/female facial models of different origins ready in Cinema 4D, so I'll just have to scan your pictures and apply the texture with a few amendments depending on your facial bone structure.
Send me a picture so I can give you an idea of how long will it take. 3 days is the maximum time needed but depending on your picture it can be done in a day or two since I already have a tone on facial models.
Let me know.
Cheers,
Sam.