Rough Country will be 'ok' but their shocks tend to run a little stiff. If you go with that kit consider upgrading the shocks to some good shocks like Bilstein 5100 or 5125. Run locking nuts on all the spring and shackle bushings so you don't overtighten them causing a stiff ride.
You can run without the rear trackbar, and many run without the front trackbar as well. You won't notice the rear