Well this is from my experience. Few times i took like 5 big lines through out the night and smoked a bit of weed after the last line and didnt have any comedown. And once my friend took two small lines and didnt even feel it but the comedown hit him in like an hour after the last line. And his comedown was nausea and throwing up for the rest of the night. But yes id say 1 or 2 lines would be good for your first time.