Which foam acoustic panels should I use for a sound booth?

       Good evening everyone, I hope that you all are doing well. I just finished building a voice and sound booth that is 4'x4'x7' made from 1/2" gypsum drywall with a pine frame. With there being so many options for panels, as well as do it yourself alternatives such as making panels from Rockwool and owen corning 703 (Here is the NRC reference for such materials https://www.bobgolds.com/AbsorptionCoefficients.htm), I am uncertain with what I need to get. If I can build them myself without any loss of quality then I would prefer to take that route. Does anyone have any experience or any recommendations for where to begin in this matter? I hope that this is the right topic thread to post this in and I thank you very much for your time and effort.