I have not personally listened to that speaker, so I can't speak to its quality, but in general, if you're in Canada, the cheapest / best audiophile setup you can usually get is one of dedicated speakers / amps hard wired together.

You would basically have a Bluetooth / Castable DAC, hooked up to an RCA splitter, then RCA wires running to each room, where a dedicated amp would be hooked up to speakers / subwoofers.

If you need wireless multiroom, then you might want to look at WiiMs as your streaming devices as they can sync together, either as part of a Chromecast audio group, or using their own sync system. They have models that have integrated amps, but the cheaper option is to buy a used yamaha amp off kijiji or a new fosi mini amp, and pair it with their streaming / Bluetooth only models.

From a speaker quality standpoint, Canada's National Research Council created one of the world's best audio labs / testing facilities in the 70s, which lead to the rise of numerous world class audiophile speaker companies: Paradigm, PSB, Energy, Mirage, Sound Dynamics, etc.

Energy, Mirage, and Sound Dynamics all eventually got bought by Klipsch and disappeared, but it means that our used speaker market is amazing. I got a pair of studio quality Energy speakers off Marketplace that blow everything else that I've ever listened to completely out of the water, for $400. They literally go down deeper then most subwoofers and were designed for CBC recording studios, and they cost less then my old soundbar. I would highly encourage you look on Kijiji / Marketplace for used Canadian-made Energy / PSB / Paradigm / Mirage speakers. A lot of audiophile grade speakers from the 90s and 00s can be found for next to nothing and still punch above $1k modern speakers.

I am running a snapcast server (on a very small VM, could be a RasPi) and have a few RasPi Zero 2W with micro-USB to USB-C adapter -> Apple USB-C to 3.5mm adapter and then feeding into various speakers/amps distributed through the house, running snapcast clients. Audio sync is absolutely flawless, devices can be grouped on demand and there are plugins for all kinds of inputs on the server. Inital setup was a bit fiddly, bit still done in one afternoon (although I admit it helped being a software engineer to compile some code myself).

https://github.com/snapcast/snapcast

I have a Raspberry Pi running MPD with a HiFiBerry Digi+ Standard; the optical out goes to an amp in one room, and the coax goes to an amp in another room. (So those two always play the same thing.)

For each additional room, I add another Raspberry Pi with access to the music on the primary Raspberry Pi via sshfs, running MPD, with either another HiFiBerry Digi+ or a USB DAC, and connect to the amplifier in that room. Each room added this way plays different music.

If you wanted all the rooms to have the same thing playing, you could add multiple USB DACs to a single Raspberry Pi, each going somewhere else, MPD can output to all of them. It is probably better to have longer USB runs than longer analog audio runs. Or you can run the analog audio over shielded cat6.

I have not tried adding a Bluetooth input to the Raspberry PI, but it seems like that would be possible with pipewire or jack.