I have a small closet setup I will be using the SH 6 plant setup in and am worried one roll of 50" x 25" 2mm Mylar will not be enough for my 45" L X 23" 1/2 W X 80" H room and I do not want to buy two rolls. So my question is will one roll of the mylar be enough, or should I go with a cheaper alternative like panda film or flat white paint? I want the best results, just dont want to buy two rolls of mylar. Thank you all for the help