This is fantastic. As a suggestion, I think a project like this requires the best when it comes to putting the hair on it - whether you go for punched hair or glued, this needs the good stuff.
http://www.nftech.com/
I used to work for a mascot building company, which is how I got introduced to this stuff. I have also used your technique for making a head sculpt... but all my head sculpts were big funny cartoony animal heads. LOL