I have 200mg of Dramamine (Dymenhydrinate) and 225mg of Benedryl (Diphenhydramine).

How much should I take of each to get a pretty trippy high? When will it hit me?
I'm going to be taking it around 2:30, going to the movies at 3:30. I'll be in the movie theater till probably after 6. When will I begin to come off it?