I’d suggest trying to stream to the Lyngdorf without the Nucleus first. For all but rare recordings, you might find most of the desired music available via stream. For those few recordings you might have not available via streaming, you can still play them the old fashioned way, with the thought that such content might eventually be available via streaming service. While streaming content might not sound quite as good, you might find the difference not worth the extra expense or effort. If you find the direct streaming sound quality unsatisfactory, you can always add the Nucleus with ss drive storage and spend the time loading it with your musical library or when critical listening time comes, just play back the old fashioned way, which might or might not ( I know redundant, but point to be made) sound better than from hard drive.
One caveat: gapless playback of Classical music can be somewhat finicky via direct streaming.
One caveat: gapless playback of Classical music can be somewhat finicky via direct streaming.