Steely strike.
Leading the attack is good, but I'm not going full-on with White Raven with Cha 8.
Sapphire nightmare blade is also good, and I'll be getting it later to fulfill the prereqs for those later tastier Diamond Mind maneuvers, but the concentration check isn't as much of a given yet.
+4 to attack from steely strike can be a huge deal if someone's hard to hit (and they often can be, at low levels), and if you're fighting a single opponent, the penalty disappears, so it's pretty good in it's own right, and it also helps fulfill the prereqs for the higher level Iron Heart maneuvers I'll be wanting.
With MoTPM and SW as your two maneuvers, you cannot take sudden leap, or I might have chosen that. Swift action jumping is cool, useful and only gets better as you go up in levels, but sudden leap is the rare (only?) 1st-level maneuver that has a prerequisite.