As I mentioned in my introduction of Petronius, using the Rhine tribunal would be good for me, but specific tribunal is not a big issue for me.
The character would be more interested in a secure and stable home as a first criteria. Good access to research material (such as a Mercurian site or something similar) would be a bonus and serve as an initial incentive to setp up there. Otherwise, he can be there due to the political machinations of his pater.
City could work for him, although not ideal since he's got a normal Gift with its attendant social consequences. A source of Terram vis would be great, and I'm somewhat partial to cliffs of other rocky areas (that does not preclude a coastal area).
Not looking for a huge aura -- anything positive will do for him.
For mundane wealth, since he's good with Terram he could easily learn Touch of Midas to supply the covenant with mundane wealth, provided we have a reasonable explanation for the income. The would be only 2 pawns of vis for a big chunk of gold. Maybe combined with a skilled goldsmith that create jewelry? That would obscure the source of the gold somewhat.