If you want to try and "beef it up" quick, you can do what I did. I took JK Sahara suspension parts and got a solid 3" of lift for $50. Then I got wheels and tires off of a sahara, (see bio). I got 5 wheels and tires, and 3" of lift for a grand total of $700.
Now, I'm not happy with the tires. only because they're a little narrow for my taste. But you can't beat the price!! Let me know if you have any q's, I'd love to spread my knowledge.
Disclaimer, I have little to no real knowledge...just limited experience.