Forum OpenACS Q&A: OpenACS 4.5 - 4.6.3, + Postgres 7.1.3 - 7.2.4 Upgrade Sequence?

I have a working site created under OACS 4.5 and running under Postgres 7.1.3.  I would like to bring it up to the latest supported releases of both OACS and Postgres.

I found the two documents:
https://openacs.org/doc/openacs-4-6-3/upgrade-4.5-to-4.6.html
(Upgrading 4.5 to 4.6, Part of the 4.6.3 documentation)

and

https://openacs.org/doc/misc/openacs-pg-migration.txt
(Migrating PG 7.1 to PG 7.2.3).

However, I'm uncertain of the order in which I should perform these updates.

Does OACS 4.5 support PG 7.2.3?

If so, I guess I can upgrade the PG Version first and then do the 4.5 to 4.6.3 upgrade.

Otherwise, I guess I will need to first upgrade OACS to the latest version of 4.6.x that supports both PG 7.1 & PG 7.2, then upgrade Postgres, then bump the rest of the way up to 4.6.3.  (???)

Any thoughts/hints would be greatly appreciated.