After several sessions, today I finally managed to touch the exit, for the first time. This is one hell of a level!
I'll now try to optimize, somehow (32 off, atm).
EDIT (about 1 hour later) : Now stuck at 132. Still feels difficult. O:)
EDIT2: YEEEEEEEY, got it, next tryyyy! :D :D :D :D
Now it's seems sooo simple, of course, LOL.
I can't believe, I solved this. Happy day! :)))