Many thanks, I assume that includes the very first quest.
So in total there will be 5XP before the Finale Quest (excluding any you choose to buy with 1 week 50 gold) - is that correct?
Also is there a transition from Act I to Act II at some point?
Always 7 XP before finale, not including training or other sources.
Spoiler (click to reveal)
Act 2 conversion happens after 4th story quest, leaving 5th story and Finale, plus side quests during that period as Act 2.