I own the SVS-3000 Micro which I use in a music-only 2-channel system like yours. It is absolutely sufficient for your needs. (So is the SVS SB-1000 Pro, which is larger and heavier, but will not perform any better
for your needs. It's only advantage
for you is that it costs less.)
For integration with the Dali Oberon 1, SVS recommends a low-pass crossover (set via the SVS app) of 60 Hz with a 12dB/octave slope. That will almost certainly sound perfectly fine. See
https://www.svsound.com/pages/merlin
If you want to get fancier, you can buy a UMIK1 measurement microphone for 100euro and use the free REW software, and then use the parametric EQ on the SVS to dial down any room modes (below 60 Hz) that you find.
But likely it will all sound fine without bothering. Note that all systems you have ever heard have
not been fine-tuned like this. Only we fanatics here at ASR bother to do it.
Also, the
Dali Sub e-9 f is probably equally good for you, if that's easier to acquire.