Using RBS20 for extended coverage

Hello,

I have the relatively old product ORBI RBK23 which includes RBR20 and two RBS20.

My problem right now is the coverage area, because of the house I live in which is mostly made of reinforced concrete so there are issues for coverage, especially outside for security cameras.

I am looking to buy a newer ORBI set that will still use at least both RBS20s.

Is there such a possibility?

If so, what is the appropriate product or products?

Also, if so is it possible to use RBR20 as a satellite like RBS20?

Thanks in advance