Connecting Airport Extreme to Orbi Network

Greetings All,

I apologize if this is a bit of a newby question.

I have a 3000sf house that is covered by an orbi system with two towers (rbk50), however, I have a large screen tv that would be improved by connecting to the network using a stand alone wireless router rather than its own built in wireless connection.  I have an unused Airport Extreme that I was thinking of using for this purpose, but wanted to know if this made sense or if I would be better off getting another orbi unit and accessing the network through that.  

Thanks

Kevin