Should I start to flush now?

I need some opinions:
1. Should I start to flush now or being that I'm up to my last week of the 12 week fox farm feeding schedule, should I just finish it out and start to flush after?
2. Could I take a sample of the bud now? It's my first grow, and for a time @ growing I'm excited to taste my treats. Or will taking a bottom bud possibly stress the plant.
Here are some pics, I tried using the loop as a lens, I don't know if it helped seeing the color of the trichs.

hmmm....
id say they still look young....
but go ahead....
just make sure to flushem for two weeks....or a week and a half.....
They can still produce bud..... i woukld use molasses to keep your plant fed....
make sure and put a gallon to each plant ....of water....

No don't start your flush until all of the hairs are red. After that I would flush until the hairs recede into the calyx's. The plant will get a few tints darker. take pictures every day when you start flushing you will notice what I am talking about.