I currently own a sonos play : 5 (gen 1), and I'm planning on building a 5.1 surround sound system with a budget of about 650-700$. I was thinking of buying an used 4k receiver (about 250-300$), a pair of these https://www.jbl.com/loudspeakers/ARENA+130.html?dwvar_ARENA%20130_color=White-USA-Current
as front speakers and these as rear
and then using the sonos play : 5 as a center speaker using a speaker to aux cable.
And I already own a subwoofer from sweden that I don't know the name of, but it's a 15".
Is this a good idea or should i rethink it?