Config Backup for F5 Review

Being tasked with finding a way to backup our new F5s....where my old bash script using bigpipe through cron as root is no longer an option. Because there's no root/bash or bigpipe available on the new appliances. Obvious problem I've run into....backup settings (namely username/password) are not per device but global. But, after an incident...all our (non-appliance) F5 pairs have different admin passwords. And, while I have groups defined that translate to the Administrator role, there are no users in those groups. Not sure if I can get a service account with that role. Normal accounts are subject to frequent password changes, etc, since the F5s are in-scope.... Also not sure if I can (or need to) configure this for other users, haven't looked to see how fixed on AD it is....to work with our ldap. But, the huge set of disallowed special characters for web UI, knocks out characters that are on our list of special characters where a couple are required in our passwords. And, are valid on our F5s.... Guess I'll have keep looking....