Maintenance for the week of March 16:
• PC/Mac: No maintenance – March 16
• ESO Store and Account System for maintenance – March 18, 6:00AM EDT (10:00 UTC) - 4:00PM EDT (20:00 UTC)
Yes, when you start out you have the enlightenment 4x bonus, once you've earned 400k xp (or more if you haven't logged in in a few days) then you'll be getting only the event and scroll bonus xp. Base xp for the quest is around 5.6k, so 11.2k with the event double xp, 26-27k with a 150% scroll on top sounds correct.