Marants SR7002 Zone 2 - how many speakers?

[Pelican170]

Hello,

I am curious how many pairs of in ceiling speakers my receiver will potentially be able to run by using its zone 2 to a speaker selector with volume control? I am moving into a house that has 4 pairs or speakers in other rooms (bedroom, bathroom, kitchen and outside patio).

I feel like it should be fine since it seems ceiling speakers are lower in wattage than home theater speakers but still curious on input.

Thanks.