body lift about $100 or so. should replace the rubber mounts when you do that for another $50 or so. i'd do the body lift first so it will give you more room underneath when doing the other mods. won't change the ride or handling at all, so no need for a re-alignment yet. you may have to extend or re-route brake lines and other hoses, etc.
then you would have your choice of shackles and spring spacers as said above, or the more expensive suspension lifts that will give you another 4-6 inches of lift.
keep in mind that any suspension modification will require the need for an alignment, moving/extending the brake lines and similar items, probably a longer gas filler neck, etc. just don't forget to add in all the other things you'll be needing as you continue to lift your truck. if you search around here those lifts tend to run considerably more than $1000, just so you know.
good luck with your build and Welcome to TRS!!