Welcome feras23!
The reply from EY depends on when and where you apply. I heard from them within 3 weeeks of my application. Some folks here had to wait a while due to the assessment schedules and the time of their application.
As for upper tier quals...I don't think they are any restrications (non flying that is). In addition, this round is about being assessed i.e. aptitude test. I am not sure if they look at your CV in detail at this stage of the game.
I could be wrong tho'...
Cheers,
Bradda G