I usually get some nausea about 3 hours into the trip, if you smoke some weed it helps it go away. I find the first 3 hours or so of the trip to be a little challenging. HBWR is a great teacher and the trip is very intense mentally, in the beginning of the experience it usually forces me to confront deeply imbedded personal issues and it helps me resolve them. This can be very intense and at times overwhelming, but it is always worth it. After this stage though when the nausea fades I get overcome by pure euphoria for a good 6-8 hours. It rivals MDMA for me and feels so clean and invigorating. One of my ++++ trips was on 12 woodrose seeds and it was then and still is now one of the best days of my life, it was beautiful.
I hope you go on a wonderful journey with these seeds, they are mystical indeed.