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I wouldn't worry unduly about the number associated with the speakers; it's just an approximation of the load which the amp will "see", in reality the load varies significantly across the frequency range.
So long as the speakers don't have a crazy low number, a modern solid state amp will be fine with them.
If you go to Richers, you can ask them to hook up some speakers and see how they sound. It's not a great demo environment in their shops from what I've seen, but I did once demo a Denon system with a couple of different speaker options and it gave me a bit of a clue as to how they sounded.
I'd guess that will be fine to run something like Wharfdale diamonds.
It depends how far down the rabbit hole you want to go.
Something like this has Bluetooth, DAB but not USB:
https://www.richersounds.com/yamaha-dab-bluetooth-stereo-receiver.html