@corelli
Looking at your system in your posted pictures, you know a thing or two about HiFi than the average dummy.
You have a good system that you now want to add a streamer to. You don't mention whether you are IT savvy or not, so its hard to know how far into the system set up you want to go. You don't indicate a budget either.
What you do ask is Hardwire or WiFi. The answer is wire (ethernet) as much as possible. If you want to eventually add WiFi active (powered) speakers (such as KEF, Sonos, Bluesound) you can do this via ROON software (as long as the wireless transport is compatible. Most streamers are WiFi or Bluetooth transport compatible (but I would advise not to go Bluetooth for bandwidth reasons. Bluesound, Sony, Naim (careful here because the atom etc are all in one units). Also be aware of the format the CDs are being converted to.
I am not going to recommend one brand over another or recommend a configuration (streamer, ripper, NAS (storage) etc. You have not given much information to really hone in on accurate advice.
I hope you can expand on your requirements so those with the experience can really advise you down the right path.
Cheers
AMG