I just got a Kia Stinger AWD, looking to do some upgrades.
First, I'll echo what others said: If this is your first performance car, enjoy it for what it is; while it is hardly the fastest car around, it is a family car which outperforms exotic cars of the not-to-distant past.
I'll extrapolate that further:
The thing is, you get all of this performance, WITH safety features past exotics lacked, with the ability to carry five passengers, with a million creature comforts (I'd have loved the ventilated seats in cars where you can feel the heat from headers even in the winter, even through layers of jute batting insulation), a crapton of cargo space, with all wheel drive, and is overengineered for the power it offers, so it does not sacrifice reliability. It's a lot of versatile, fairly quick car.
I'm not saying don't tune it; just enjoy it for what it is until you get bored with it. Enjoy it is as it is until you find yourself hitting the limits of the car and you're no longer smiling, and then,
then start upgrading incrementally. I'd tackle the suspension first, or if your car happens to be afflicted with the pulsating brake pedal issue, upgrade to harder pads (I'm a fan of EBC redstuff, which thankfully is now available for the Stinger). Once you've upgraded the brakes, consider a cold air intake and JB4.
The reason I suggest this approach is once you've owned
truly fast cars, you'll reach the point where you realize there is NEVER enough power; even "too much" power is not nearly enough. It's an addiction which can never be filled, so upgrade incrementally so it feels like a new car each time, you get to be wowwed again and get to savor the process.
I wish I had gone this route; I started by shoving enormous V8s into tiny cars so no car has never really offered enough power. I got spoiled early on and as a result no car has accelerated quickly enough to satisfy.
, i cant imagine doing anything except hardwiring nice dashcams into the fuse box to cover yourself and maybe catch some interesting things on video. 
