No Mac binary releases?
This is particularly unfortunate to not see a Mac v0.7.3 backport because many have found the v0.8.x Mac binaries not-quite-ready-for-primetime and have downgraded to v0.7.2.
Gavin does all the Mac stuff, and he's too busy to get involved in backports.
Did you try 0.8.2rc1? If that doesn't work, I'd definitely open an issue (or follow up on an existing one) on GitHub...
Yes, that should be fine.
Do note, however, that 0.7.2 remains affected by two privacy vulnerabilities:
CVE-2013-2272 and
CVE-2013-2273