Making speakers “disappear”…..

So sounds like you’ve got a near-field setup that many people like because it largely removes the room from the equation.  I tend to like room reflections to add spaciousness to the sound, so I place the speakers about 5’ from the back wall and sit about 10’ from the speakers and toe them in so they fire just outside my shoulders.  Your Totems do a great disappearing act so keep experimenting to find what works best within your room and for your tastes.  The good news is, it’s free!

It sounds like you’re definitely going in the right direction.  Like football,speaker placement is a game of inches.  Or perhaps millimeters.  

Unfortunately there is no hard and fast rule. Much depends on room geometry incl. height and damping. As a general rule on conventional speakers the time difference between direct sound and first reflection point has the most important impact on perceived spaciousness. That is why not moving speakers into corners and working with toe-in is important. Ideally the distance between back and sidewallls shouldn‘t be the same either; I suggest you get a speaker setup guide elaborationg on the 3/5th rule etc. There are numerous posts on speaker positioning on Agon.