I'm not a fan of sculpted hair and that's not because of a lack in the artist's skill, its just that in IMO the hair never sits/looks right - possibly because the skin is realistic with the hair looking what it is: "sculpted".
That aside I must congratulate you on what has to be one of the very best sculpts of Reeve I've ever seen. You've truly nailed every aspect of the man of steel and Reeve himself. I'm delighted you might do a deluxe version with real hair because I believe that will make this the best Reeve sculpt there is.
Highest regards
MARK