I had more in mind to create my front stage first, and then finnish with the surround. I know the center wouldn't be an issue for a while but i'd like to get a nice display in front first (2.1 or 2.2) I have use and try to configure a sub in a few different room and always felt (at higher volume) the presense of the sub. Maybe i did something wrong but i dont think so ...
So look like i have to forget the 2 ep 125 option smile

Nad C356 DAC & C515
Axiom M3v3
Grant Fidelity RPF-120 MKII
Analysis Plus Black Oval 12&10
JRiver 19