Hundreds of dollars, and tens of hours of back breaking work in.. NEED HELP.

I'm baffled.. You would need to spend 1000's of dollars to make something like that into a respectable grow room. It would be too much trouble trying to fight for plant survival in the setting you described. Not to mention it would be kind of disrespectful to your parents and would most likely raise some eyebrows in your neighborhood or even get you into serious trouble over something kind of silly. Though if you do try it- you got more balls than me son. Hahahaha, good luck either way & be careful man.