Regarding the trackbars, I would only bother if I saw that the axle appeared misaligned, or if it caused issues. At 2" of lift, it isn't needed, but it certainly won't hurt. A trackbar relocation bracket would be just as effective in the rear.
Generally for the front, adjustable trackbars are used instead of relocation brackets because trackbar relocation brackets require the use of drop pitman arms.
As to the MML, it may or may not be enough. Chances are it will be. At 2" of lift, you're not likely to create any severe driveline angles, so it probably should be sufficient. Whatever you do, make sure you align the transfer case and pinion to the correct type of driveshaft that you have.
Assuming you have a stock rear driveshaft, the transfer case centerline and pinion centerline should be parallel.
An aftermarket driveshaft will need to be set up differently:
If there are issues, they will generally present as a low rumble or pulsing vibration. You won't see the vibrations, but you'll hear them, and the mirror may go blurry if they're powerful enough. But at 2" of lift, if they even do exist, they'll likely be minor. Chances are you will be fine.
