I don't think Sergio should jump to 168 yet, I think the fight that makes the most sense is Sturm in Germany (because Sturm won't leave Germany since the ODLH debacle). I believe he should look to move up to 168 after the S6 is over (should be the end of this year I think). Second to that I think Geale would be the fall back option. I think a decent tertiary option is Pirog although he didn't look that great against Maciel.