Ironic really. Posted the concise version and was criticised by even more posters for not providing detail or context. Apparently, the answer to “which wireless bridge” is “buy a new streamer”. Oh no, it’s actually “bin your amplification”. Nope, it’s “buy 50m of ethernet Cat 5e even though you’ve already said that’s not practical in your space”. Actual answer appears to be “As a human being I cannot read half a page and understand it despite reading countless threads which go on for pages.
Thus deleted and posted this and… hey ho. Looks like people are more interested in being right than helpful. Lesson learned.
Elsewhere an immediate and obvious answer has been provided for which I am grateful and have said thank you.