Looking at the specs of those speakers, the satellites are 3-ohm and the center channel and sub are 6-ohm - typical AIO sadly. Most AVRs these days can do 4-ohm ~ 8-ohm no problem, so if I was going to connect up those to an Onkyo TX-SR373 it may be best to pair the satellites and wire them in series, and use them as your main speakers and it should match the center channel pretty well. Then get a cheap pair of satellites for the surround speakers, and adjust all the individual speaker levels as needed.
For an example of wiring speakers in series, see
Speaker Impedance, Power Handling and Wiring@amplifiedparts under "Example 2: Series Wiring".
So you would have the L and R channel connected to one small speaker and one big...