We could probably just push the latest nightly.
If you think it is possible to come up with a quite 'stable' nightly, it is probably best to choose that.
Else IMO just direct wheezy users to the nightly channel, or tell them that they could:
1) Wait for when Jessie comes in stable and use the release from the repositories
2) Download the build 4997 from the website and disable Opus
In the meanwhile, if anybody wants to offer a backport, that would be very welcome.