big barney: yes and no
I think, at a minimum, you should replace the shocks. 2" to 2. 5" of additional height puts a stock length shock pretty far into it's designed travel. Big bumps and pot holes will wear a stock-length unit out quickly.
The track bar is up to you. The stock unit will locate the axle around 0. 5" to 1" toward the driver's side.
Control arms are another 'up to you' item. On any lifting project, stock length arms will locate the axle toward the rear of the vehicle. On levelling projects in particular, this distance is slight (about 0. 5" or less).
On mine I used the Skyjacker D25 coils, Bilstein 5100s on the front, an a DT track bar. I went with the DT bar because my stock bar was shot and had play at the ball-stud end. It is adjustable, rebuildable, expensive, and sweet. Same with my shocks, they were shot and I wanted high-end replacements (I used their stock length units on the rear axle). I used the coils, as opposed to spacers, because I liked the idea of them being progressive wound. I drive a lot of unmaintained gravel roads and I think the D25 coils provide an improved ride. I left the stock control arms in place. I actually prefer those units over aftermarket. They are flexy.
When you lift, you're changing the geometry of everything. When one distance changes so do the others. Anything that ties the axle to the chassis will be different afterward. Whether or not you choose to address these changes is up to you. Levelling projects aren't too big a deal and you're not going to destroy anything by simply swapping coils or adding a spacer. You may, however, accelerate wear on some items (shocks, track bar) and want to replace them with lift-oriented products when the time comes.
Whew, you can tell when I'm bored, my posts get ridiculously long. Good luck.