new closet system few questions

hey yall im new here n i just started another grow, i had a outdoor garden that i didnt get to harvest due to family issues and having to move, but i started this lil one i only have one growing in it and its bagseed since here in florida we cant go to a shop. but i have a 2.5ftx2x5 with two 25w cfl's on the 5"in plant, i had tin foil on the walls but i read that its not really to good to use that, is that true? but now i have just the flat white walls. i also read that some plants can sex them selfs early and on my 2nd set of leaves there what looks to be a lil petial but it look to be only one sticking out right now and its on the branch not the two lil things on the stem, could that be it means its a female? im thinking of germenating another speed and stickin it in there but is that enough room? and how many lights would i need?and im using cfl's due to the heat and since its a closet there are clothes in there? and one more, is there gonna be a real strong stench of pot, or a suttle stench, or does it just depend on the yeild? srry bout the noob questions but its my first indoor and ive searched for setups like mine with the same questions but no go. thanks yall happy smokin