@Ghostiix
The first thing to remember is that most of us are expats so we came to Saudi as qualified pilots. You are therefore more likely to find the information that you require on arabic sites as it is obviously the native language of the people seeking the cadet jobs.
AFAIK, there are two ways for cadets to join:
1: Go train to CPL/ME/IR standards at your own expense, i believe that this costs around SAR350,000 in Saudi with either Rabaigh Wings or SAFA.
2: Get accepted in the Government college graduate program where you will obtain a BSc in Aviation studies with the CLP/MR/IR, this takes about 4 years.
There is a lot of study involved, but its based on the American system so it isn't rocket science.
Have you tried flying the B777 simulator in the Red Sea Mall Jeddah? This might give you an idea of where you could be in 5 years time
Good Luck