Whats more pratical for your life style? Do go camping, hunting, offroading? Do you do any towing? Is the TB your DD? I left the suspension stock and just modded everything else. With the winters around here, I definitely do not want to go low and I use 4WD pretty much all winter long.
Performance wise, I would say to definitely get a PCM tune. You can install an air intake and delete the intake resonator. You can always install wheels and tires without lifting or lowering the TB.
Lighting is another option. HID/Crees are a huge improvement over halogens in the headlights (Even projector retrofit). Upgrade all incandescent bulbs to LEDs in the interior, turn signals, etc. Swap out tail lights for LED ones.
Possibilities are endless depending on what best works for you and how deep your mod fund goes.