[ ] Combat Training. The Adepta Sororitas are some of the finest warriors to be found anywhere in the Imperium. See if they will consent to providing you with personal tutelage in the arts of violence.
Hm. We definitely will need combat skills at some point... but it's not urgent. For now, we're better served by having warriors than being one.
[ ] Know Thine Enemy. You would be a fool to think your only opposition will come from within the Imperium. Consult the Sororitas and learn what you can of the daemon and the fallen, along with how to fight them.
Again, useful, but not urgent.
[X] Words as Weapons. The Sororitas are not all frontline warriors, and with the aid of their non-militant Sisters you may gain a much stronger understanding of the less overt threats likely to interfere with your great work within the bounds of the Sector.
This strikes me as the thing most useful to use right now.
[ ] Faith and Coin. Contact Deacon Amelia and get a full assessment of the state of Sanguis' economy, infrastructure and bureaucracy. You must know the tools at your disposal before you can work with them.
OK, I love Solar Bureaucracy, and we definitely need to get in on this... but maybe not as our first move.
[X] Twisted Flesh. Sanguis has its own populace of mutants, oppressed and enslaved by the pure-born majority. Reach out to them, and bring them into your flock in truth as well as name.
This strikes me as the most appropriate thing to do. Our character has been championing these guys for a while; that's what got us in trouble with the Inquisition to begin with. Now, it's time to actually get shit done helping them.
[ ] Warp-Born Mind. As your recent experience reminded you, there are psykers on Sanguis, not least of which are the astropaths responsible for interstellar communication. Visit them, and speak frankly, as likely none have done before.
Also important, but I'd place the mutants first.