My 2 cents about zone mode ( zeus + airbraker) the hardest is to accutumate our eyes to the different shemes of color ( i found it hard racing with the dark ground of the track and the fade-light backgrounds.)
After your eyes are ok with those different colors especially mach1 you can definitly pass that zone 75.
When you got the trophy try immediately the airbraker one : i did passed it on the 1st attempt finishing at zone 63. I haven't using a lot of sideshift here to obtain that trophy i just alternated by ultra quick tapping on airbrakes and long time ( 1 or 2 sec ) maintening 1 airbrake with this technique you can even turn better at high speed i.e : on the 1st left curve, right after the start.

So no need to try the airbraker before the zeus : just do it immediately after you got zeus.