I hope I can help u with this.
1) you are running a 5.1 setup so u still have two channels to spare.
2) you dipole surrounds have to go on the left and right wall rather than normal surrounds which go at the back of the listener. Due to their more revolving voice nature, they sound best on the walls facing into the listener.
3) bi-amp means to run seperate wires for the tweeter and woofer/mid.
Although I have not heard any difference, but I have done it on my system 
4) always use "small" size on your front/center/rears and let's the sub handle all the bass. Cut it off at 80hz.
5) try using spikes on any speaker which is moving. A moving speaker will lose a lot of it's energy and would sound distorted.
6) when listening to music, just use 2.1.
I got a similar setup like yours but different brand.
Hope this helps