One time I disrespected the process of making edibles. 4:20 came and went five times before I was done being high. That’s not an experience I’d like to repeat. 
100mg probably isn’t enough to get you that far, but it’s still a lot more than I’d do in one sitting. About 20mg is a good number for me. Twice that is a good ride. Four times that and after about 4 hours I’m wondering if I going to keep getting more high or if I’ve peaked.