How does ist sound ... ? Not as good as I aspected ... only got second place on the German Sound Quality Championship with one point behind the first place. Quiet okay for the first year - but I have to improve.
The car can be filled with music with a good stage - concert feeling without anoying the next 3 blocks with your music. But I always have to put down the back seat for best subwoofer.
Improvement to you install? Protect the power connectors against short circuit. Always use cable sleeves espacially for the connectors on the amp
eg
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It seems that you put the raw cable into it. this will break after a while
The the connector of the power cable on the right 90° down, to protect it from being pushed.
The rest is okay. I have spend together with a professional installer about 200 working hours into the car.