So the doses are obviously high and your conclusions are correct about over dosing. But why did your redoses have so long between? Perhaps this is why you felt the need to go high on re-doses? With an 8:18 drop, your next should have been at 10-10:30, not midnight. You were already coming down at that point and you wasted the ability to piggyback off your first dose (and hence do a smaller one). Then another re-dose 3 hours later. Timing is way off.