Monitor Series Polk Audio

[parambir]

Hello

I am looking at Monitor 5 series speakers for surround or rear and Monitor 60 Series II for main towers? I have certain doubts though:-

1. I am not sure about Monitor 60 Series II speakers? How do they perform?
2. Monitor 5 are rated at 6 ohm. But other speakers of mine are at 8 ohm. Will it make a difference in running Monitor 5 with 8 ohm since channel wise ohm cannot be configured.
3. How will Monitor 5 function as surround or rear? Will they be an over kill?
4. How will the overall combination be - Monitor 60 and 5?

Thanks