Dude, you were going to put up that 400 watt light and you live with your parents? Wow, yea that's not going to work. Plus if you actually flower a plant that produces decent bud it will stink like crazy. I think you might want to hold off until you get a place of your own. To make a grow that yields anything at all and keep it completely stealth from people living in the same house would take a lot of money. Fans, carbon filters, ozone generators, dehumidifiers, etc.