New Double Din- Help Pioneer NEX

Hello TW-

I am getting ready to pull the trigger on a new head unit for my 2008 Tacoma TRD DCSB

I was looking at the following if anyone could shed some light on if I am missing anything it would be greatly appreciated! Also if anyone knows where to get a better price let me know!!

The reason I am upgrading is because I backing into someone (insurance covered luckily) but wanting to install a back up camera so I don't do this again and figured it would be easy to upgrade some other things along the way. I am doing the install myself so hoping this will be all I will need to complete but if I am forgetting something help a brother out!

Head Unit: Pioneer 4201 NEX + back up camera $482

Pioneer AVH-4201NEX Double-DIN Multimedia DVD Car Stereo with 7" WVGA Touchscreen Display with Android Auto/Apple Carplay/Backup Camera

https://www.amazon.com/Pioneer-AVH-...pID=41inGQsI8IL&preST=_SX300_QL70_&dpSrc=srch

ADS-MRR Maestro idatalink for onboard diogostics: $99

$180 Maestro ADS-MRR Universal Radio Replacement and Steering Wheel Interface

https://www.amazon.com/ADS-MRR-Maes...e=UTF8&qid=1530560693&sr=8-3&keywords=ADS-MRR

Wiring Harness: ADS-HRN-RR-TO1: ~$40

Maestro HRN-RR-TO1 Plug and Play T-Harness for TO1 Toyota Vehicles

https://www.amazon.com/iDatalink-Ma...TF8&qid=1530560723&sr=1-1&keywords=HRN-RR-T01

Double Din dash kit: Scosche TA2053BKB: ~$38

$40 Scosche TA2053BKB Double DIN Radio Install Dash Kit Compatible with Select 2005-2008 Toyota Tacoma - Aftermarket Car Stereo Installation Kit - See Fit Guide in Images to Verify Vehicle Compatibility

https://www.amazon.com/SCOSCHE-TA20...pID=41RRJmx5C8L&preST=_SY300_QL70_&dpSrc=srch

 

I got the metra kit because I heard the scosche kit didn’t fit as well as the metra did