the first thing that comes to mind, is vibration transferral.
Wall mounting speakers is often a bad idea.
What is the wall made out of?
what is your plan on how to mount speakers onto the wall?
#Yamaha HS8I mounting options
opal sable
Is floor stands a viable option?
I went the extra mile, and cut holes through my desk to have the floor stands go through the desk, thus it kinda looks like the speakers are floating a few centimeters above the desk.