Hahaha that is a sick bong.
I would say dont worry about one plant. I mean, it will smell, but not enough where people outside your home will know. 1 plant will require not enough resourses to alarm any hydro company. Just keep it on the low, dont be telling people, its hard not to. Research grow boxes and adjust to what you find and what you can do. Unless again like your picture displays you are young and your parents would find out. I have 5 plants, not worried. They are starting to smell tho, smells like a cream bag when I walk in my room. Best of luck tho.