When that girl gets her first brown or orange hair slow down on the watering and give her bout two to three weeks the last week flush her good with water the firts day of that last week and stop all the watering. Then get her ready for harvest. That plant should yield more then 25 grams from where Im standing. Although we cant get the same picture your getting. Nice first time though.
It would be a very harsh smoke and a heady high. I really don't know though, but everything I've read says that early harvesting gives headier highs and later harvesting gives stonier body highs. Looks like you've got a sativa on your hands there, judging by the thin, long leaves.
I would not cut one stem off that girl till she was done. My goodness calm down and wait for that girl to finish giving birth to your smoke.