Sounds like you already have some exterior ideas.
So let's talk performance...
I assume your drive-train is stock?
If so, there are things to preserve your investment, things to make it more responsive, things to make it faster, and along the way some of those things will make it louder, from "Hey I got a Hemi" to "Hella-loud" depending on your preference.
Thing is you have still got a little bit of 5yr/100K warranty left. So, to keep the warranty intact I wouldn't get a Tuner even though the performance increase is VERY satisfying (pain in the ass to de-tune each time before taking for dealer repair--or worse, broken at side of road, no way to pull tune, and towing to dealer--
queue evil music).
The first few warranty-safe mods on a stock truck
would be (not necessarily in order):
--Catch Can to protect your investment ~ $135
--Pedal Commander to improve throttle response ~$290
--S&B or Vararam CAI ~$300 - $350
--Mufflex bolt-on muffler replacement (14", 18" or 24") lets you dial in the sound to your preference as a no weld muffler change. ~ $300; +~$150 if you pay for install instead of DIY.
--Ported Throttle Body (gets up to 8% more air flow, but only as you approach wide open--its a factory TB machined wider internally and hard to detect so reasonably safe on warranty, but not gonna do much until you tune or add headers). ~$350
--Once the warranty is done, and if you're looking for more power, then those long tube headers and that tuner. No price data because I haven't gone there and I haven't decided if I want to go that far.
--After that comes gears, torque converter and the real speed products like NOx, or a supercharger--definitely not warranty or wallet friendly.
Best part is its your truck and no mod is wrong if its what YOU chose*.
* Except throttle body spacers--those are an evil rip off.