As far as cheap streamers go I've had or have the Node, Cambridge CXN2, Ifi Zen Stream, WiiM Mini, and Arcam SA30. If Digital really isn't your "thing" and you mostly will be using Spotify, along with wanting the Streamer to be family friendly (Bluetooth) I would go with the $80 WiiM Mini or wait just a bit for the WiiM Pro which will have an Ethernet port. With the WiiM I'd suggest using the toslink out into your existing Dac input.
Spotify is not Hi-Res, I find it along the lines of quality as YouTube Music. Nothing wrong with that, I just don't see the need to over pay for a higher end streamer when your choice of Streaming Service doesn't call for it. The WiiM's Home app is better than most in my opinion, but I also feel like most of them out there have issues or a pain to navigate.
When using my external DAC and streaming services such as Quboz or Tidal I didn't hear much of a difference if any between the WiiM and the Node. The Zen Stream is a step up in sound quality but I'd say the Zen can have issues at time..not so much a problem I can't navigate around but I wouldn't call it family friendly. Others may disagree.
So that's my 2cents on the subject, I think the WiiM is a fabulous entry level product. It doesn't have a wired Ethernet port but that was never an issue with my Wifi. Its so cheap that if you ever decide you need better I doubt you will cry about what you spent. Move it to another room or a cheap secondary system. Good luck