An 8oz cup of coffee only has like 75-100mg of caffeine in it. With your 16oz cup plus an energy drink plus an Excedrin, that would be like ~400-500mg of caffeine. Assuming a typical drip coffee maker that can make 12 cups, you're looking at a total of like ~1000-1200mg of caffeine, double or triple your estimated daily amount. So it's kinda no wonder you felt wired that day. Extreme, sudden spikes in your stimulant intake will do that.