Welcome Jram…haven’t heard the Kessil brand for quite some time. They were one of the leaders years ago but new studies found that the Green and Yellow spectrum is very important in the Full spectrum range and these lights concentrated on the upper and lower ranges.
Autos- you can run 24/0 but I prefer 20/4. I find the NAP time helps the plant be more resilient. Resilience can be as important as GROWTH.
A completely sealed room - make sure you get some CO2 in there, else where is it getting it from if the room is sealed?