My AC seems to work too well. I live in Madison, Wisconsin, so it gets fairly hot - it was 92 yesterday.
I use my remote start whenever I can to start cooling the cab before I get in. When I'm cruising, I usually have to turn the fan down to the lowest setting, and turn the temperature up 1 notch from the coolest. That usually keeps me really cool.
I did find that if I had my sunroom on vent the AC is much less effective. Obviously you need to keep all your windows closed for it to be 100% effective and that includes your sunroof.
Something I also do if I need that extra bit of fan speed is to turn on recirculation (push the right-most knob) and that hits the AC with the spice-weasel and kicks it up a notch.
On another note, I've been considering getting the chrome step bar (the one with the black steps and oval chrome tube) so my wife can get in with a little less vertical effort (she's 5'2").
Does anyone have any close-up pictures of how it attaches to the truck and how much clearance you have for stepping on it?
Cheers!