You've gotta do some searching on here. I don't want to sound like a jerk, but the questions you're asking have been answered about a million times - this is a very common body lift and the wealth of information on how to do it on the site is staggering. Anyway, if your kit doesn't have the bumper relocation brackets, you're going to have to make your own or have someone with fabricating skills do it for you. The plans/dimensions are on the site somewhere. Steering shaft extension should be included in the kit. Make sure you watch your brake lines, I had to unbolt mine from some stock hangers in the engine compartment to prevent stretching and stress. Also, make sure your AC high pressure line is not against your lower fan belt when you're done with the lift. The belt will cut the line and it'll cost you.
As for offroad gear and accessories, your best bet in the internet. There are millions of sites you can order from. Summit Racing, Jegs, Desert Rat, 4 Wheel Parts etc. are good for general stuff. PIAA, Hella, KC, etc for lighting. Google what you're looking for and you'll find more sites than you know what to do with.
Good luck!
