This is actually not a bad idea (although I think you still have 5 years before you have to do this).
Shaving your head before you get into the advanced stages of receding hairline/bald spot is the way to go.
OR spend the coin and do what Rooney (ManU) did and get the new, innovative transplants.
Muddy, was Biotin the supplement you were thinking of? My hair stopped receding when I started taking Biotin everyday. Matty and kato can confirm.