Quick help with a car audio system

[Cages2Clouds]

Hello, so I am looking at buying the listed below for my 14 Mustang and am wondering how many feet of wiring I'll need (ball park), what gauge of wire, if I should get a dry cell and if so what should I look for, and any general comments or advice on any of the components. Any help is much appreciated.

Pioneer AVHx5700BHS

A pair of SA series 12" subs

A SAE-1500 watt amp to push the subs

A set of SD 6.5" component for the front

A set of SD 6.5" coax for the rears

A SAE50.4 amp to power the comps and coax

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[the727kid 10+ year member]

I would recommend a Kenwood and Maestro set up to retain most of the functionality from the AC Controls/Seat heaters (you will be able to control them on the Kenwood). The Maestro kit looks 100000x better than the metra one too.