Nice setup!

I think I'd add the following:
Tinder
Pot or cup for boiling water
Collapsible water carry
Small Saw (since the Kick doesn't have one)
Duct tape (though it appears you might have that?)
water purification

I don't see a whistle, but you mention a PSP, so you seem to have that covered.

Also, it's not pictured that I saw, but I assume you have a small FAK in there...

Looks like fun!

Edit: Oops, I also assume that you will have a dedicated knife, probably sheath vs. folder on you anyway and the Kick is backup. But the firearm (foldable rifle + ammo) is a consideration depending on your situation and trip plans.