Or should we wait until updating
<https://fedoraproject.org/wiki/Licensing:Main#Good_Licenses> to SPDX
identifiers? 

That's my understanding. The plan is to not treat the wiki as the
authoritative source, but instead to generate a Docs page from a table
in fedora-license-data.rpm. If the license is listed in
/usr/share/fedora-license-data/licenses/fedora-licenses.json as approved:yes,
then this should be enough. The plan is to rework the wiki too, but that'll
likely take more time.

+1

Technically you can do it now. It is approved. However there is no/little guidance for now. We aim to have this done by next branching event (August).

So you either know what you are doing, or you wait till the documentation is done. Otherwise you are in risk to re-doing that later.

Miroslav