I have $.02 to add, and off course it may be worth all of that...
For the springs, you may find the OME 927 HD fronts a little much for a pavement pounder. Even with 4X4, I went with the 926 "Mediums" which were a great improvement over stock, yet still not as stiff as the 927s would be. Even the "Light" duty springs have a stiffer rate than the stock ones, and would be an improvement.
Also, the 265's may be a bit wide, and rub some when turning. I have 265's on my full size Dodge, and have looked it over once or twice to see if I could get that much tire under the Liberty - it would be tight. But then I don't want to have to bend over the pinch weld either...
I would say go for it with the Nitto's though. I had a set of Toyo (Very similay "Sister" brand) Open Countrys on my 17's that were great. Ride was quite, and firm. The only complaint I had was I only got 40K out of the 50K tires. Might be my driving style... In the whole time of running them down to almost nothing, I never had any problems with any of them going out of balance or wearing funny.