if it does have preflowers(which i dont think it does but i could be wrong) you wont need a magnifying glass to see them..the pop out at you once you know what you are looking for
patience...you'll make yourself crazy trying to figure it out...because the female and male look similar to people who don't have the eye for it... so, you won't really know unless you put it into flower
it depends on you, truthfully... you have people that 12 12 from start to finish...other that veg for a month... others veg for a month and a half....and there are those that veg for 2 months...