Your opinion on the following configuration

Hello guys, I once had an offer from the local car Hifi shop for my Golf 7 (5-door Limo) and would like to hear your opinion about it, as the topic itself is not my specialty. Prerequisite of me were: 1. not visible 2. designed for electronic music Here the components from the offer Front: Eton POW 160.2 Rear: Eton POW 160.2 Sub: Round housing Focal P30 Amplifier: 4-channel Eton Mini 150.4 2-channel Eton Mini 300.2 + cable + insulation + mounting What do you say about This configuration? Is it ok for a “non-audiophile” or is there still potential for improvement or savings in one place? – In another forum it was written that the rear speakers are not so important and you can leave the serial reds in there without further ado – is that correct? The Discover Pro is advanced with the normal standard sound system (no Dynaudio)