Hey, haves you looked in the store section. They have lots of kits with everything you need. I’m sure there is guys here that will help you, I grow out side. Or you could talk to the guys at Dealzer that advertises here.
Tom
Check other peoples rooms, closets, boxes, etc, get out some paper and a pencil and draw your room based on basic designs you see.
I had no idea there were “plans” for grow rooms, they seem pretty straight forward to design…Light, intake (forced or passive), outlet (forced), circulation fans.