I tried 6 units of Levemir at midnight last night and I'd say things went swimmingly! I didn't have to wake up early to correct or anything (the 8am insulin icon is for my usual Levemir injection). I went up to 122 around 4am but then it went down on its own and stayed level. I must've had some low carb leftovers in my system or something - maybe that cheese stick I had before bed? At any rate, I think 6 units will be my midnight dose now.
Since July 30th, I've managed to stay in target more than 90% of the time, with my daily average blood sugars in the 90s and low 100s. I've had a few lows but they were easily treated. My numbers seem to only get better!