Hi leo,
I wanted to point out that this Saga has the following rule: "Puissence, affinity and classed abilities: where an ability is a class of abilities- living language, professional skill, crafts, for example, puissance and affinity add to all versions of that ability."
So you don't have to assign Puissance to both Goldsmith and Blacksmith, just Puissance: Craft and you are set (pretty strong in combo with Verditius abilities, uff!). So you have 1 more Minor Virtue slot open, awesome. Could it be...Affinity Craft? 8)