Topic: 5.1 setup guide

Hey Guys!
I have 5 yamaha hs8 and one hs8s sub, how do you guys reckon I should go about setting the speakers up? right now, I have all the 6 outs as below,
1- left 2- right (stereo) 3- mid 4-sub (mono) 5,6- rear left, rear right in stereo. I have put the macs audio configuration to 5.1 and everything sounds good to me. Anyone got any suggestions to make this setup sound better?
Looking forward to your recommendations
Thanks!

Re: 5.1 setup guide

Measure the spl from all speakers.
I use the Test signal in Audio MIDI Setup and an iPhone App (AudioTools) at the listening position.

UFX+, FireFace 802 FS, Digiface USB
12 Mic, M1610 pro, Micstasy
MacBookPro M1
Logic Pro X