Having spells but lacking mana—this could be resolved easily with a bit of time, though that "bit of time" might mean years, decades, or even centuries.
As for the issue of money: if there's plenty, spend plenty; if there's little, spend little. The Elves compensated him with 100,000 Gold Coins, and the plunder from Moon Bay was another massive haul, enough for him to purchase equipment. As for upgrading the Volcanic Island... possessing treasure invites trouble; with his current strength, it's unwise to make overly extravagant modifications. The already favorable location was sufficient.
Leon, born with a large heart, quickly figured things out and decided not to linger at Moon Bay any longer.
Leon was certain that Andrea lacked the courage to embezzle his wealth—not even a fleeting thought of it.
