I am a Air Force driver by vocation and PES A. There are C9L3 drivers in my camp also. 5 more mths to ORD.
Some facts:
1. Not all driver vocations are stay out, depends on your unit. If you are in transport hub then most likely no stay out.
2. Driving course in SAF is class 3/4 if you pass. Total 8 attempts, you fail by 8 attempts prepare to OOC.
3. Not all units will give you the opportunity to clock 7000km. Even if you clock 7000km, it depends on what type of vehicles you use to clock 7000km. If your camp all class 3 vehicles like mine, then you can forget about converting your license to class 4.
4. Once you have accident, GG to you. Confirm no license.
5. You cannot choose whether you want to be a driver or not. It is all up to SAF to decide because you sound like you can decide your posting.