Diffuser decision for ceiling

@tomic601 yes, so, the issue is, I don't know how to hang them temporarily as I haven't purchased the kit needed to hang them as they cost quite a bit, hence why I took a step back and said, before investing in the J profile rail , glue, etc Let me see which one is better, then purchase the necessary accessories needed. 

The issue is, I have a matte black ceiling, so I definitely don't want to make any holes that need to be redone/re touched up. 

I wish I knew how to use REW, but also the time it would take to learn it. 

I have been told about the screen being an issue and was told to use a blanket to cover it, I do need to try that one day and see what differences it makes. 

Come to Canada anytime!

I have a similar setup though I'm running Focal mains.  I went with absorption rather than diffusion on the ceiling.  I'm very pleased with the sound I'm getting.  I setup one row of panels about 4 feet from the front wall, then their is a break with just sheetrock for 18 inches then a second row of absorption panels that ends roughly at the listening position.  There's really no right or wrong because everyone hears things differently.  Good luck and cheers.

thanks @rick_n for the input,

Yeah, at this point, I have about ~ 9 acoustic panels on the walls. So I was looking to liven it up a bit. 

So absorption in your ceiling, see , this is why I was kind of thinking of going the VicPattern Ultra Wavewood route, it gives a bit of the best of both words, so its like a meet in between type of scenario. 

The panels you have are only 4 pounds each. Use this for temporary 

https://www.google.com/gasearch?q=blu%20tack%20adhesive%20putty&source=sh/x/gs/m2/5

or this 

https://www.command.com/3M/en_US/p/d/b5005604181/
Agree with the idea of having a couple of and up to six inches of space between ceiling and panels. They are called clouds ☁️ for a reason. I’d still look at absorption for the ceiling as that is one giant flat panel up there. Anyways, give the putty a try you never know If that is the sound you were looking for unless you try. Good luck with your endeavors. Sounds like you’re gonna have a bunch of fun.

Thanks @gkelly and just to add, its sad, because I wouldn't be able to do a comparison, Ill take a look at those putty options. 

Just wanted to add, although, I guess it shouldnt be of great importance, I would 100% prefer the look of the Wavewood, it would stick out less and blend in with the ceiling much better.