As far as bench bleeding the master cylinder, it's pretty easy and can be very beneficial if not crucial when installing a new master unit.
I started to type out some instructions here on how to do it, then I remembered where I had seen some real good instructions on it and figured it would be easier just to post a link.
This is a link to the Classic Performance Parts tech page Scroll down the page a little to find the section you're looking for.
Good luck.
