I just ordered 4 DI's for a 4.1 setup! SOOOO EXCITED!! My listening room is about 19ft by 22ft. Pre/Pro is an Emotiva UMC-1. Amps for now will be Behringer A500's (unfortunately) but will be upgrading to an Emotiva XPA Gen3 amp soon. Sub is a massive Infinite baffle with 8 18's. Plan is to...