How much lift do you want? Bilstein 5100 Struts and Shocks with the highest setting and their rear coils will give you about a 3" lift in the front and 1.5" in the rear. Add rough country upper control arms for a 3" lift and you're good to go with tires up to 37". This is around ~$1000-1200, you can upgrade the fronts to the 6112 and get the same lift with better ride for an extra ~$400-500.
If you want to go 4"+ then research what you're buying and in my opinion go with a kit that has shocks that match the lift height. To save money a lot of the lower priced kits use strut spacers up front and your ride isn't really improved, others use really cheap struts/shocks and the ride can be ****. Quality shocks from Bilstein, Icon, Fox, and King are a great way to go and will give you a good ride. Remember with these kits you have to drop the front differential and it requires cutting the front crossmembers so no going back.
In the end, first thing is first decide what you want to do and then go from there.