10MILA prep: 8 min/km incl. stupid mistakes? [HEADCAM ORIENTEERING]

I am a hard working amateur orienteerer preparing for "the long night" at 10MILA, but I need to get some speedwork done. The night before this, I failed dramatically on this "The Course Of The Week". So now I try it during daytime instead. Obviously not the preparation for night orienteering you would think of, but today it's the high pace that's in focus, not the lighting conditions!
But will I make 8 min/km around this course - although I make (spoiler alert) several time-costly mistakes?