All I can say is be careful.
I did my own lead keel
a couple of years ago, investing a lot of labor into that, and the paint
and everything fell right off of it
Last year I had it sandblasted and done professionally. It seems to be holding now.
I had followed -- I thought -- the required procedures. I carefully degreased the keel and applied an epoxy
two-pack primer which was specifically ok for lead.
The very nice guy who did my keel last year told me my mistake was not immediately applying the primer. He said that lead oxidizes quickly and that epoxy doesn't stick to the oxidization. He said you have to paint
within a hour (or something) of sandblasting.
Don't know if that's true, but his work
seems to be holding up. I found nothign about that in all my careful reading leading up to doing it myself.
I suggest doing thorough research
on the correct procedure and materials.