Mercedes Sprinter NVC3(soundsystem /w headless unit)

Hello gals and lads, i am new to this forum and a newbie with electronics in general. I have been reading this forum from time to time but it's really too much information for someone like me to wrap my head around how things work, let alone all the countless questions i'm getting that for the majority of the members here seems common knowledge.

So let me explain what i'm trying to build and i hope for some feedback from you.

I want to build a headless car radio system with the only connections being bluetooth and aux.

Let me list what i have gathered till now.

Bluetooth board: ESS9038+QCC5125 Bluetooth 5.1 Decoder Board
https://www.ebay.co.uk/itm/165645010831

TPA3116D2 50Wx2 Version Finished Stereo Digital Power Amplifier Board
https://www.amazon.com/TPA3116D2-Official-Version-Finished-Amplifier/dp/B07TZYJQX4

Other boards i have that i may want to use but i haven't figured out yet how(meaning the right way of connecting everything):
FreeDSP Aurora
FreeDSP Classic(2 boards)

Also next to buy is:
Audio System M-165 EVO 2 - MB132(speakers and tweeters)
https://en.audio-system.de/products/speaker/m-series/

Rockford Fosgate Punch Single 12" 300 Watt Amplified Subwoofer P300-12
https://rockfordfosgate.com/products/details/p300-12/

Now, i bought the Bluetooth board cause that seemed to be the most expensive(hence the best?!) and the amplifier cause i have heard many praises about the TPA3116, but i haven't yet figured out if it will be best used for the mids or highs.

Now ideally i guess will be to get an AudioControl d-5.1300 or visit an audio shop and call it a day, but, i would like to build something myself. I like the DIY boards and the challenge of trying to make a sound system on my own.

Has anyone of you any suggestions?
Thanks in advance for your time.
 
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