Looks like a good product. I ran Roon ROCK on my onw I7 NUC for years and was happy although it is not fanless, I had it acousticly pretty much isolated. Still I would have preferred fanless. All that said, a fast cpu isn't really needed for the core as it is processing mostly in the background. but it never hurts to have more cpu, more memory, and more ssd.
I have moved to a Grimm and use the on-board core which is excellent. At one time I had the Innuos Zenith MK3 and the onboard core was poor. I felt like they purposely did a poor implementation of roon so that their Sense app sounded better.
I am a bit surprised you are using it as a streamer as well. I always placed my core on the network with a seperate high quality streamer. The Grimm incorporates them into one box but they are still seperate components.
If I was still running my NUC I would jump on one of these for this price.
Jerry