Default [Q] Build AOSP For I9300

Hello,

I recently downloaded the official AOSP source code into my machine and I want to compile it for my GT-I9300,
but before that where do I get the device blobs and properitary drivers from? Can I use CM's device tree? Are there any other device trees?
And in an addition to that how do I get the Kernel to work properly? Do I need to use the CM kernel?

A hint / tip or a link to a guide would be appreciated.

Thanks in advance