Morning folks!

So, I've been doing alot of reading here and I was wondering if you could confirm if I have what I need?

First, I didn't know there was a double din trim kit so my setup will look a bit ugly till I get it.

I have:

(1) Pioneer App Radio

(1) Double din kit
Radio Stereo Double Din Mount Trim Dash Kit + Wire Harness & Antenna Adapter | eBay

(1) Steering wheel controler Metra Axxess ASWC Universal Steering Wheel Control Interface (Black): Automotive

(1) Relay switch (so when on trips the kids can watch TV)

Is that all I need and/or are those the right parts? I don't want to cut wires since again, I'm waiting on the new WRX and I'd like to take her back to stock when that time comes around.

Thanks in advance for all your help!!!!