Contemplating starting some Jack Herer. This is based soley upon what I have read. Of course, someone out there has to have first-hand knowledge of it. I'm wondering how long it really takes, and how tall it will get. Anything you know about it would be great. Interested in knowing what the high is like, too. Can you get over-stimulated on it? To the point of nervousness or unpleasantness? How about pain relief, is it good? Thanks in advance!