office lamp= worst shit possible. your plant will never produce budz like that. get some good lights, fluoro, bulbs, metal halide or hps. you need also timer so you can have your light cycle for veg and flowering periods (18/6 and 12/12). you also need a fan for good air circulation.

plus, if your cousin is against drugs, he will notice for sure the smell or anything and its 99% sure he will discover your plant. get a good light and a good grow box or grow outside man beleive me office lights are shit

peace and good luck