He was fuckin' with you, man. It was funny, too. There's no stage 7.. just veg. and flower. Maybe count seedling, too. blah. Don't worry about "stages." Your plants should be flowering some time around September-ish, unless I'm mistaken (haven't done natural light grow in 18 years or so). By that time, they will also likely be 7 feet high, unless you top the hell out of them, which will make them some 7 feet wide. Just sayin'.
Generally I advise people to not plant a seed unless they've researched what they're getting into first. You might want to consider putting them in a dark closet some sort of ventilation and a few CFLs on a 12/12 timer.