McIntosh MC611 vs Parasound JC5

My system:

Parasound JC 5 stereo amp, JC 2 pre amp, JC 3 Jr phono pre amp  Pro-Ject X2 turntable. Integra Research CD player. Pair of Rel S-510 subs. Eversolo streamer.

 Recent purchase of B&W 802 D4 replacing my Kef R3 meta. 

 My room is 22x19 feet.. Listening volume is between 75-90 db. I love the way my system sounds.

Would I benefit from adding an additional JC 5 amp and  Bi-amping each speaker  vs adding a pair on MC611 mono blocks vs keeping system as is ? 

Speakers were auditioned in showroom with McIntosh amps which also sounded great.   I plan to upgrade the streamer at some point but this post is about the amps. 

Thanks in advance for any advice.