Park Avenue Stereo Time

[RJolly87]

After 9 years of ownership, and a proper spoiling by a Bluetooth head unit in my Regal, I have decided enough is enough.

The LF channel is dead
The RF speaker is fragged
I have no idea why the rear speakers are still working
The factory installed cassette player has never worked right

The approach should be consistent with a beater status vehicle. I am happy with the stereo in my Regal (Pioneer DEH-6600BT on stock 6 speaker setup), although admittedly I do find myself exercising restraint on account of the speakers, or namely, my lack of desire to replace any just yet.

My thoughts so far:
Bluetooth head unit:
https://smile.amazon.com/gp/product/B06 ... L56N5TYVTQ
$30 for pretty rave reviews is pretty enticing. There are doubts about illumination, or namely, a lack of dimming features, especially given the location of the radio. I am open to other suggestions on this front as well. Spotify via Bluetooth is the primary interest.

Speakers:
Given that factory 4x6's seem hard to come by, several sites recommend a 4" round. According to the internets, Rockford Fosgates seem to punch well above their weight class as far as speakers go. With that, these seem like a decent bet:
https://smile.amazon.com/gp/product/B00 ... Q5FFITKTLU

Dash install kit (The cubby sells it for me):
https://smile.amazon.com/gp/product/B01 ... QA2BK8DWCU

Antenna Adapter:
https://smile.amazon.com/gp/product/B00 ... PDKIKX0DER

Harness Plug (I am guessing this gives a stock interface so you don't have to hack the harness?):
https://smile.amazon.com/Metra-70-1858- ... ds=70-1858

This is honestly my first round with a stereo, and I am a bit lost in the car audio scene. It seems like installation isn't exactly rocket science from what I gather

I am hoping to find out what the thoughts are about everything, and if I need to make any adjustments.