If your wheel much closer to your fork crown you're not going to be able to run a brake. Doesn't look like there is much wiggle room in there.

I'd say your best bet by far is to go and see a framebuilder and talk about what you want. I seriously doubt you're going to be able to find a new, NOS or 2nd fork that will meet your requirements without having to spend years looking for. Especially as that looks like the matching fork for the bike?

You need to definitely measure the rake of the fork (the offset of the fork, how much roughly is it angled), probably the distance from crown to fork tips (roughly the length) and the length of the steerer column.

You'll also need to know the fork threading.

See here for a diagram of how to measure rake:
http://en.wikipedia.org/wiki/Bicycle_fork