Jeep Cherokee help

I have found out that Jeep forums are NOTHING like our fabulous FABO.
Can you guys please give me some advice?
I have recently purchased 2 Jeep cherokees. One is a 96 2wd/ 4cyl/5speed. It has a 4" lift and large tires that i would LOVE to put on my 99 Cherokee 4.0 4wd which is stock. It looks like they used coils in the front and springs in the back for the lift. I know nothing about lifts.
My question: Is this a bolt on swap from one Jeep to the other? What parts exactly do I need to swap over? Coils, shocks, springs, anything else?
Will my brake lines be long enough?
Think I can do it alone on a Saturday, or is more involved?
Any help/info would be greatly appreciated.

Jim