I do know if you choose option 3, then option 1 will show up the next day

Seriously, some of the worst choices I've made restoring bikes was because I was not patient enough waiting to find the right parts. Try Via Bicycles in Philadelphia.

And look for a retired machinist with a home shop. I know a business will have no interest in making one of these but a skilled old guy with a lathe should not have a problem with it.