Ahhhh, I guess I missed that you already own the speakers. Yeah, make do with what you have. You can always upgrade later if budget allows.

If you are planning to upgrade down the road, I would leave out the "nooks" for the M0's and mount them on the wall with a bracket instead of in the wall. They are rear ported and not designed for in wall installation. Also, you won't have to fill any holes in later.

I was using M1 ti's in a smaller room than yours and found they were struggling.

I kind of thought that was a railing and that new farther back location should work well. The RR channel might be covered up a little as I will guess the railing gives way to an actual wall just before the corner, but I doubt it would be that detrimental to the sound.

I completely agree regarding use of brackets for mounting.

sweetspot,

The M0's are not ported, and if I deci to switch down the road, the patch job should be pretty easy. I'll report back in a few months and let you know how it worked out.

Thanks

or do it right the first time. just kidding

Yes, your revised diagram is about like one of the things I had in mind when I suggested that the back surrounds could be moved back "to the extent possible".