Just FYI, caster DOES change. The Jeep sits naturally ****-high, and if you level it out while lifting, it will have more caster than what you started with.
Is this a problem?
No.
You should be able to get camber in spec, but don't bank on caster and camber both. As long as you have a good split in caster and camber, and your toe is properly set, you won't have any tire wear issues or drivability concerns.
Like Troy said, your springs will settle, and you'll need several alignments over the first year-ish. This happens with all vehicles when you install new suspension components (specifically springs).