Einlion
I like the second option because Spike from Cowboy Bebop had a very epic ending, but if he's going to be a troll like Zeldrich, then no. Messing with the badguy by trolling them to death sounds fun, but unnecessary when it gives them more time to make others miserable. Giving Vahn the confidence of Gilgamesh sounds even worse unless you have him look back on his actions regularly to make sure this is what he wants and he isn't doing something that past Vahn would look down upon. Then the confidence thing would just loop back to his old habits of overanalyzing. So maybe something like the confidence of Samus Aran from Metroid that she commits to a goal and sticks with it. That goal being up to you.
Hmmm both have their pros and cons. The legitimate struggle would be more interesting conflict wise but it’d be retreading ground in a way, especially with Vahn accepting that he doesn’t need to actively change the world and just existing influences the record. The go with the flow goofball seems more like how a being that’s slowly growing above participating directly in conflict might act, but that’s only if Vahn actually commits to it.... This all just my opinion though.