Speaker Positioning

@twoleftears , +1 
A laser measure will be the most accurate.

@OP,
There are other measurements that can be considered. Sound pressure level, frequency response are just two.
If you are serious, why not contact a high end dealer to assess your system?
I bet you'll learn a few things just watching.
Bob

Start with a laser to (+1 on Bosch) to get each within an inch of each appropriate ear. Then fine tune (especially toe in) according to soundstage. If the wall placements are equal move one until it sounds best and match the other first. If not good luck.
Measurement and dynamic are oxymoronic.

check out the book “Get better Sound” or Wilson’s Audio Setup procedure in YouTube

I have a pair of speakers, this is the directions for speaker placement of the tweeter AFTER the toe is set. Take a laser pointer. Make sure it has a flat base. Take the flat base and put it on the face of the tweeter screen face (it's a ribbon). Set the tweeter at 6" or so over the head at the seated position, and tighten the adj screws..FST Free Swinging Tweeter.

Great idea, WORST place on the planet to mount it.. I'm fixing it.. :-)

The placement of every driver in every direction is EVERYTHING.

Man oh man is that hard...

Regards

Check out what the experts say on speaker positioning to save you a lot of time to get the initial position before making the more precise movements. Check out the following sites: Cardas, jim smith, ps audio and others. There are formulas to use based upon wall width and ceiling height for example. I use the 1/3 formula (sometimes the 1/5 rule) where you divide up the length of the room into 1/3rd and you place your speakers 1/3 the room length from the back wall, then use Cardas formula for the distanc from the side wall and jim smith’s rule on placing the listening chair from the speakers. Then you start fine tuning.