Of the choices you provided, One Love is my second choice after Free Bird. Musically I'd probably take One Love over Free Bird but as a user name it sounds as though you're trying a little too hard.
Peaceful Soul, Humble Soul and Fearless sound like you're trying way too hard.
Forever Young makes me think of a young person who dies and thus they're always remembered as "forever young"
Wow great comments, thanks you very much!!! One Love vs Free Bird I'm definitely leaning towards One Love just because the message is a little more embracing and universal... musically it's also a song that always make me smile humming it