You can do spacers or new springs, up to you and your budget. If running a spacer I personally wouldn't go over a 2" at most with them.
There are some good spring kits out there as well that are not too expensive, that is what I ended up going with. Bilstein, Carli, Thuren are all good choices. I would also consider a longer track bar just to keep things centered up. You can get adjustable ones or like I did, use a power wagon track bar which is slightly longer then your stock. It's probably good for up to a 2" lift. Over that and you will probably need longer to get it centered better.
As long as you keep the level around 2" you shouldn't have too many issues, it's pretty straight forward. You start getting up around 3"+ then you need to start looking at sway bar end links and maybe control arm drop brackets etc.