custom stereo

Hi there im fairly new to this forum but i have used it many times to get reviews and advice before. I am going to be taking on a good sized rebuild of my entire audio system this summer. I currently drive an 05 Mustang Coupe with the following set up HU- Sony single din (temporary only)...

I am starting a build log for my new stereo build. I created my first custom stereo install last year (pictured below) and now i just ripped it out and starting all over again. This is a hobby for me and do this during my spare time. I hope by posting this, it will help generate ideas, questions...