Build Advice New Build for Audio creation

The case is a hotbox, it was mentioned by pretty much every reviewer on how the case just traps heat.

P.S : I Live in france, and some pieces are more expensive.
Your PCPP link shows you sourcing parts from USA. If you look at the top right hand corner, you'll see the location's drop down menu.

and a lot of audio creation.
This is vague, we need a lit of app's you're going to be using.

On second thoughts, regarding your initial post here, you're advised to stylize your thread with info asked of in this thread;
and the community will chime in with worthwhile suggestions.