Homestudio 4x4m how to do it?

As the title says im going to have a spare room in my garage that is 4x4m that I want to build my home studio. I only produce on my computer and if I record its only simple vocals nothing fancy. And its mainly EDM production.

How would you go about designing a room like that?

Im thinking floor to ceiling bass traps in every corner, absorption panels on the walls and maybe a hanging panel above the listening spot. And placing that spot about 30-40% from the wall which I heard is the ”sweet spot”.

The floor is concrete atm but I think maybe putting in full covering carpet.

Do you think it would be a good idea?