Want my advice?
Don't bother.
DHI convinced me to have 2500 implants and said it would give me 'great density'. I young and trying to bulk my thinning hair, I was not bald.
If anything, my rate of hairloss increased after the procedure. 1 year on and my hair is thinner than ever and I am much less confident and ??5k lighter than before.
Not only that but the whole experience was traumatising and the people who say it is a pleasant experience are frankly sadists of the highest order.
My advice would be shave it and buy a nice selection of hats.