Nice track and great mix & mastering IMHO If I had something to say about mix & mastering that would just be that I found the kick a bit too loud compare to other elements in the track, maybe the snares & clap too but this is really less obvious, so not even sure if those need adjustments once the kick being leveled down a tiny bit.
For the rest I found the mix well done, might even be one of the best track I've heard here on the forums, I was just expecting more "movements" and new elements coming along the mix, but it might not be the purpose of this track, sounds more like "easy/peacy" listening moment, but yes it could be an excellent builder allowing you to introduce more energy.
There's a good correlation between the stereo & the mono listening and what you did with the processed back vocals & the reverb on those is very great and adds a lot to this genre of music, suits perfectly with the rest of the track.
Great one IMO, you could even develop & push this one a lot further 'cause it's a lovely "burning-in" track or nice teaser for more to come along or after.
Let's see what others will say now...