I too have been starting to research acoustic treatments for my room.
I am a little apprehensive about GIK right now. If you search online they seem to be having pandemic related issues with delivery and quality.
Might want to check out some other options until GIK get sorted out. It's difficult as their Alpha series is perfect for what I need.
Vicoustic looks cool but $$$$$. Darko just did his room in Vicoustics I think. Spent five figures.
Good luck!