I was almost there. 4976 meters, running it by ignoring all strategies and just jumping. And then, a window appeared, below my elevation, when I was going ridiculously fast.
DAMN YOU WINDOWS!!!
On my first try I did it in 9 days. On the eight day I had maxed out fuel sucker and spent over 10 minutes in the air (got me over 900000 dollars). DAy nine I maxed eveything out, and was there (except gravity kill).