Ha! Definitely no bouncy-houce atmos modules for you!
If you can afford towers all around, go for it.
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
An important consideration will be some sort of riser for the surround towers: you do want those to have the tweeter above ear level.
Your front 3... Your best performance would come from another tower, or their larger Standmount speaker at center, but if you need to go horizontal...
Just out of curiosity, do you have anybody near you that deals Monitor Audio? I liked the Silver Series better than the ML Motions. They have a pretty good 3-way Center too.
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)