looks like its stretching a bit due to lack of light. get a few more. you cant tell sex untill the preflowers come out after you put it into flowering. also transplant into a bigger pot or it will become rootbound. if you have only cfl lamps then any timer will do but if you use hid lamps use a 15 amp timer. from the looks of it wait 2 weeks to a month to start flowering. also use good flowering nutrients.