For everyone's reference, my sessions tend to run ~8hrs, and I give 8 XP per session, 5 extra for completing an objective, 10 for a Motivation, and 15 for a story arc (plus possible extra depending on the final boss). And I flat out gave my last group 100 XP for the Thorns War timeskip. And I usually give out free backgrounds with story justification. If you want to spontaneously acquire a Mentor 5, you have to pay for it, though.