Tessarael
Adventurer
In my opinion, the best feats in order are:
3) Iron Will
2) Two Weapon Defense
5) Improved Critical (short sword)
+1 AC is nice, but you don't have major AC problems. The Will save is where you're lacking, so improve that first. Some extra damage is always nice.
In my opinion, the feats not worth taking are:
1) Skill Focus (Use Magic Device)
4) Combat Expertise and later Improved Feint
Your Use Magic Device will continue to rise with each level. You're making good use of it now, no need to get a feat that gives it a temporary boost that won't be much use later.
Combat Expertise and Improved Feint are relatively weak feats. Improved Feint isn't worth it versus most opponents - they get to add their BAB to their Sense Motive check opposing your Bluff check to feint.
3) Iron Will
2) Two Weapon Defense
5) Improved Critical (short sword)
+1 AC is nice, but you don't have major AC problems. The Will save is where you're lacking, so improve that first. Some extra damage is always nice.
In my opinion, the feats not worth taking are:
1) Skill Focus (Use Magic Device)
4) Combat Expertise and later Improved Feint
Your Use Magic Device will continue to rise with each level. You're making good use of it now, no need to get a feat that gives it a temporary boost that won't be much use later.
Combat Expertise and Improved Feint are relatively weak feats. Improved Feint isn't worth it versus most opponents - they get to add their BAB to their Sense Motive check opposing your Bluff check to feint.