Greetings, I'd like to start a run in All Capital Cities +Black Sea category, but I'm completely stuck when it comes to a few factors. Would anyone mind answering the questions, please?

1. What exactly does "last text box" mean when starting?
2. Is it against the rules to use Quick Jobs?
3. In some cases deliveries can be started from undiscovered cities, is that allowed?
4. Is the time measured using IGT or RTA? Please reply soon!