| UnArcaneElection |
Actually 2 feats: Weapon Finesse does it for the maneuvers that you use a weapon to do as well as for normal attack rolls, while Agile Maneuvers does it for all combat maneuvers, but not normal attack rolls (so they overlap, but neither is a complete superset of the other).
| Snowblind |
You don't really need it, though. Trip can be used with a weapon, so you can Trip using weapon finesse.
EDIT:Gah, damn ninjas.