I think I would suggest duplicating the media to a second drive named exactly the same. That way, you can exchange projects without reconnection issues, as long as the mount point is the same: /Volumes/DRIVENAME.
Depending on your network and your source footage and/or your number of streams, sharing over ethernet might not be the best solution. But if you insist, maybe try connecting the machines directly with a CAT5e/CAT6 rated cable and turn on file sharing on the machine that is hosting the media in System Preferences. You can cut out the router/switch if you don’t need it, that might help a little with speed depending on your hardware…
Michael Gossen
Helium Digital Media