Cool. I'm in the end with the trees. Both kinds!

Okay, in a closet, don't try to add more light unless you can add more ventilation.
That stuff from home depot- is it called 'fungicide 3'? That is neem oil. It is not going to KILL pests, but it stops them from feeding and breeding.
Transplant during the light period so you can see your plants. Unless you own night vision goggles; in that case go right ahead.