well you need to consider how much and how far you want to go.
put it this way. im 22 years old, i dont own a business nor do i camp/tow. so for me having a diesel truck is just a hobby/toy for me. i traded in my v10 for the diesel because i was sick of 9miles to a gallon. youtube turned me onto an sct. since then i knew what i wanted to do. you can always look good and go fast.
my mod list is small. my looks are basically back to stock. when i first got it, i lifted it 4inch and put 18 rockstar wheels with 35s. tinted the windows, put a flip out headunit, throw some gauges inside, intake, exhaust. you already have a decent amount of mods. get a tune from eric and see what you think.
buy a pair of wheels and tires, changes the whole look of the truck. tint the windows, not much more then 200 bucks right there. ditch them amber cab lights and get some recon stuff up there.
you have a sharp looking truck to begin with. wheels and tint. buy some new tunes and go from there. but dont keep changing your mind every 5 mins, its gonna cost you money and your gonna lose your mind and might do something stupid like go out and buy a dodge