Microphone Isolation Panel instead of Rear Absorbtion Pads

[Bradstone]

I'm looking into Accoustic treatment for my room, so far I've just put thick blankets over the side walls, nothing spectacular, but for $200AU or so, I could get four sets of these:

https://www.ebay.com.au/itm/12-Pcs-...349624.m46890.l49286&mkrid=705-154756-20017-0
It's enough to spot cover the ceiling, side walls, and a few directly behind the drivers on the fronts.

And I was thinking one of these:

https://www.ebay.com.au/itm/25-7cm-...349624.m46890.l49286&mkrid=705-154756-20017-0
For the rear.

I'm thinking a mild concave shape, slightly angled up perhaps?, it would sit between the two lamps, between me and the clay moulds, this could just remove all of the rear reflections.

My listening seat is a 2m x 2m couch, so no floor reflections 🙂

What do you think? Has anybody tried something like this?

Edit:

So tonight I put some large cushions roughly the size of the array in the place I was going to put the array, and also some makeshift bass traps in the only two available 90° corners in my (assymetric) room.

With some foam bass trap corners It'll be a good $250 purchase I think...

https://www.ebay.com.au/itm/Alpha-2...349624.m46890.l49286&mkrid=705-154756-20017-0