Speaker Positioning

So lots of potential solutions and even more information to fiddle with.   Anticipate a relo further form the back wall, may not be able to accommodate side wall optimization but it seems like always from walls is a constant.  
The sweet spot/toe in variable seems to lend itself to almost as much debate; do you adjust sweetness to a single location, or do you compromise to expand the geography? Another personal preference no doubt.

thanks again to everyone who took the time.

Other than following advice on how not to blow something up or catch fire, I take everything put it in a jar and shake well. Dump the mess on the floor and take a little from here, a pinch there, then let your ears decide.

LOL T-Jockey! That is exactly what I am doing, somewhere between 1/8-1/5, tweeter height, etc. etc. etc.  all great free things to try!

I did purchase the cheap Bosch laser rangefinder.  If only I could find a good used mass spectrometer. 8)

^^^What tablejockey said!

I use a variation of the Vandersteen method and Cardas.  Then adjust according to your tastes/preference.

I tried the Cardas formula and it seemed to work fine. I’m always trying any formula I can. The one that worked the best for me, ironically, was a formula on YouTube (can’t remember the source) for quick decent sound for most rectangular rooms with speakers against the short walls. I thought...what the heck and it yielded a better result. It was suggested that it’s only a starting point and to tweak from there.

It’s 1/5 width of room to the tweeter from the side walls.

And 1/5 depth of room to the tweeter from the backwall.

Next, experiment with seated position and speaker toe-in.

Best result I’ve had is nothing between the speakers. I moved my rack to the side wall.
This helped imaging immensely. It is said that a lot of the imaging/soundstage is killed by stuff between the speakers.

It sounded much better than the sound room at Upscale Audio. This room (no longer in that house) crushed most tailored sound rooms I’ve experienced. It also had an acoustic ceiling made from concrete (no asbestos) and wood floors. One wall was heavy stone so I attached high relief wood carvings (and cuckoo clock) all along the opposite wall to mirror the stone wall as much as possible.

I miss that room.