Making a better duelist

[Ravingdork]

Many years ago, I made a duelist character (shown here). I am looking to optimize her even more while keeping the duelist concept intact. She is a 25-point buy character with standard starting wealth and possesses 75% of the random variable in hit points (rounded up). I'm sure there have been plenty of new resources released since her initial creation that could now be used to make her even better.

So, what advice can you give me for making her into a better duelist?

[stonechitlin]

I was looking for a way to add stealth as a class skill to this build, and came across Divine Tracker archetype for Ranger. This lets you get improved unarmed strike for free if you take Irori as your deity as well as favored enemy/track and some additional class skills.

You lose 1 CMD from the second rank of Weapon Guard, but the bonus feat is made up for with the Divine Tracker bit.

I think you also end up with higher saves, but to be honest I am not sure how that is calculated.

[Morganstern]

The Swashbuckler class synergizes well with the Duelist, and the dueling sword build. Or be fun.

Using the dueling sword in one hand, with the dueling mastery feat and nothing in the off-hand, you would get +2 AC and initiative. Since it counts as a piercing weapon with the exotic proficiency, it also meets all the requirements of Swashbuckler and Duelist.
Assuming a human, with the Heirloom Weapon trait, you could take weapon focus and quick draw at 1st level, dueling mastery at 3rd, dodge as a bonus feat at 4th, and mobility at 5th.
Swashbucklers have weapon finesse at 1st level, so you qualify for Duelist at 7th level.