I have one set of 4 ohm rockford components, and 2 individual 8ohm O2 audio speakers. Why question is should i run the rockfords off channel 1 and 2, and run the 2 O2's in parallel down to 4 ohm on the 3rd channel. OR run the rockfords how i mentioned earlier, or run 1 O2 off the 3rd channel and the other off the 4th channel