Here is what I currently have going on. This may help you visualize it a little better.
I run lights at night and they sleep during the day. 10 pm lights on, and 10 am lights off.
That gives me time to mess with them in the mornings and helps keep my temps regulated easier.
I have two 6” intake at the bottom and one 6” outlet at the top. My 6” exhaust fan brings air in the bottom and out through the top. The pictures on my journal may help.
Do you have electricity in your grow room?
Do you have an exhaust fan carbon filter (for smell if needed)? You need a way to exhaust the air if you don’t already have one.
My carbon filter is near my ceiling to pull hot air out, right above my light and near my drivers for my lights.
It would help. Not sure that is necessary. I’ve used a hose and just lay the end of the hose next to the intake and it will dehumidify the room. You may have to play with how close the hose is or how high the setting is on your dehumidifier. I have to monitor and adjust all the time but it’s better than having bud rot or mold issues due to high humidity. I grow in hydroponics so if I can control the humidity anybody can. 
My dehumidifier is in a 12x11 room and it’s hooked up to one of my intakes into my grow room. Hope this helps. 
