OK, assuming what you wish works, the BT speakers needs to be POWERED, meaning plugged in to a wall outlet, I dunno if you consider that a mess. Maybe even worse, some BT speaker pairs, one of the speakers has the power plug (where the internal amp is), then you have to run a cable between the 2 speakers. There are battery powered BT speakers but I am not touching those.
Then when you read receiver with BT, they often mean a BT RECEIVER, intended to be used, for example, playing your smartphone on it. What you propose, most likely will require a externally attached BT TRANSMITTER, not expensive, but it's another piece that needs to be added.
BT speakers, at least used as the mains, defeats the purpose of a powerful, low-noise, high-fidelity receiver/amplifier.