Ordered 4 Carbon Panels + cloud (CPA) to start, wondering about placement-Acoustics Forum-Acoustic Fields Forum

Here’s a diagram of my room layout. https://www.dropbox.com/scl/fi…..&dl=0

The structure on the left is a rough layout of the master bathroom + closet. I didn’t put the exact measurements into the layout, it’s just there for reference. I’ve marked my planned placement of the 4 carbon panels in red. The other similar-looking items in the room are some of my existing 6″ safe n’ sound panels and 18″ corner “bass traps” which I built awhile ago and was of course disappointed with their performance both audibly and their lack of effect in my REW measurements. The two blue rectangles on the top represent exterior windows.

Are the spots marked in red the best choice for the first 4 carbon panels, or is there a more optimal placement? Obviously the CPA will go above my listening position. If these panels and cloud make a noticeable difference in my REW measurements I’ll of course be ordering more as budget and time permit, but we all have budget issues and have to work incrementally, so I’d like to get the best performance I can out of the first batch. Thanks!