first time grow, fat Bad Seeds, flowering question

I'll spare my whole story and just go straight to the question. I got this really nice bag of mids and kept these fat seeds and now I'm growing them. Gave them 6 weeks of veg. so after 1 week of flowering they budded up. Right now they're during their 3rd week of flowering and looking good. I've estimated about 7 weeks flowering but I'm not really sure if they'll be done by then so I'm not sure if I should flush the 5th or 6th week and let them age for 8 weeks total. Any suggestions?

More details please. soil/hydro? what kind of lights, size of grow area...Pictures help a lot as well.

I didnt think any of that was necessary, I was just wondering how long they should flower since they are just bag seeds. Using soil, 150W HPS light in a 2ft square area in a closet. Got 4 of them, each about a meter tall. Tried to add more pics but it wouldn't let me, hope thats enough.