Well, a word of warning if you decide to go with 30" tall narrow AG tires and adding 4" of width to the rig by adding wheel spacer...
You will have fun!
These things are like a gear that grab roots and rocks, and the P5 does not exactly run out or torque in 1st gear so climbing is in it's nature.
I went out yesterday in some serious wet clay and deep mud with a long arm Teryx and a few 4 seat RZR 1000's in the woods at Haspin and I gotta tell ya these things grab rock edges & tree roots and pull you up a hill like a goat on a ladder! I found that first gear is perfect for steep inclines now, and even second is worth using on hills that I would not have tried on a 4x4 heavy atv.
I only fell over once and that was my fault. I was going up a steep trail that had a V-bottom trench and I fell into the bottom washout rut and fell over onto the roll bar and had to get pushed back over. But, it only took one guy to put me back on my wheels (We never did get out).
It can spin these tires in deep sticky mud, I gave up after hitting 3rd gear here and realizing I was going to winch out. This is what happens when you wife dares you to try to go through a hole that never dries up, my goal was to soak her and stay dry but my plan did not succeed.
This was a nice hill that was slimy, the rock hills and rooted out hills were steeper but I do not have any decent shots of that, I may get some from someone else.
This was a second or 3rd gear climb.
We went up this after this 1k, we did it in 1st gear, not super fast like a racebuggy, more like a tractor.
http://vid26.photobucket.com/albums/c143/vtwindepot/P5/Riding around/Video May 21 5 57 02 PM.mp4