Some Cymbidiums are semi-terrestrials. They grow in the topsoil.
You might want to pull up some pictures of wild Cymbidiums growing along the roadsides or cliffs. You'll see what's going on.
Everything sounds right, except they can afford to go a little drier than what was recommended on the tag.
Cymbidiums are not as difficult to grow as Phals!
Just sit back and relax. Enjoy your plant.
Once the warmer weather rolls around, you can put it outside in bright indirect light.