Specific built twin enemies built to try to kill one person, who is magically completely unaware, that still have a hard doing so, suddenly makes it a weakness?
Eventually, AC won't matter, and DR/- will prevail.
So, while Uncanny Dodge might have you spraying white gooey happiness, it doesn't top DR, which always comes into play.
Also, Rogue sucks.
Going the dex route, and nabbing an Agile AoMF might work well.
Ancestor works well, and at 11th you will be hitting at full BAB with Spirit of the Warrior.
Go Azata-Blooded Aasimar, and pump a revelation through the racial Favored class bonus.
Blood of Heroes is a good choice to pump, and when you can add the Courageous enchantment to your AoMF, you will pumped pretty big.
You could choose to pump Spirit of the Warrior, but will not see the boon until 11th, but your BAB will actually be higher than you level when it comes.
The Shield is a weapon. All feats, effects, and abilities treat it so.
There exists no "fist only" restriction with unarmed strikes.
Anyone, even non-Monks, and those without the Improved Unarmed Strike feat, can make unarmed strikes.
You do not even need arms, or legs.
An Ooze can make an unarmed strike.
So, the Klar, is listed as an One-handed weapon, in the weapon entry.
In the description, however, it states that "A traditional klar counts as a light wooden shield with armor spikes. A metal klar counts as a light steel shield with armor spikes."
Now, Light Shields, are also light weapons.
So, which is it?
What exactly do they count as a Spiked Light Shield for?
Feats? Class abilities? Two-weapon Fighting penalties? Enchantments?
Do they count as both a light, and one-handed weapon?
James Jacobs is not a rules guy. He notes this often.
So, he gives opinions based on how he would run it in his games.
He has a few of his own houserules.
Shields are weapons.
You can take Weapon Focus, and choose a Shield.
You can enchant a Shield with weapon enchantments.
So, the weapon, that is "another weapon", can be a Shield, as a Shield, is a weapon.