You're welcome!
I'd love to offer help.
Regarding your kingianum, they are about as hardy as nobile. That one can stay in the cool room for the entire winter. Keep them on the dry side but you do need to water every so often. Otherwise, they will dry up and die.
Phals will adapt to "artificial winter" when it is cool and days are shorter. 15 at night is perfect any time of the year but 10 may be too cold.
You want to bring them next to your bedroom maybe?
Keep then on the dry side also. Otherwise, rot may set in.
Are your phala in moss or bark?
If in moss, do not soak as doing so can invite problems during the cooler&darker season.
Just mist the moss heavily until it becomes just moist.
If in bark, you want to thoroughly water it when dry.
All the best!