Now that the rest of the requirements have been met, here is the current average rating for the three subs:
4.13 (Ahkti) +
3.63 (Fena) +
3.88 (Key, Quill, Seal)
44.64/3 = 3.88 which is greater than the required 3.25.
My journey is complete. I shall now humbly await the word of the Guild Master.