TCL TV, TCL alto 7+ sound bar and Roku Bluetooth speakers

I have a 65" ser 4 TCL Roku TV. I have the TCL 7+ Alto sound bar with subwoofer connected through ARC (sub is wireless). I really want to add the Roku wireless speakers as rear channels. 

Seem easy to add thru ROKU TV menu. But before I buy the Roku speaker want to make sure they will work. 

Streaming YouTube TV now and sound is weak. Figure adding Roku speaker will help. They will be closer to me. 

The TCL TV speakers are weak and so is the Alto 7+ sound bar. 

Will the Roku Bluetooth speakers work with my setup.