Hello, I would like to know if using a OSD ATM 7 + Onkyo TX-NR555

Hello.
I have a Receiver Onkyo TX-NR555 connected at my home as a home theater with a second audio zone solution.
I would like to validate if it is a good idea to connect an OSD ATM7 speaker selector  with my Onkyo TX-NR 555 zone 2 speakers output in order to expand the audio solution to other 4 rooms (spaces) with an afforable price. I am using russound RSF-610 8 ohms speakers.

Thanks in advance for your comments.