Sorry for suggesting this late, but I have a feeling skipping the other MP scroll in Fillmore is a bad idea. I believe you are going to have to spend time leveling up regardless, so I doubt it is a waste especially when you get a extra scroll. It would help the boss re-fights for sure. It will definitely help against the Act 2 Maranha boss which is one of the slowest fights.
Anyway, here is the scroll I'm talking about. I tested some and it appears after you seal 3 of the 4 lairs that the event for getting the scroll won't trigger.
I don't think VG got this one either. I do think even though it will make the Fillmore sim longer I believe it will be worth getting this because like I said; you will have to spend extra time anyway to level some. Also it would of course make the Act 2 Fillmore boss and the Act 1 Bloodpool bosses faster as you would have a extra magic to use. It would require some testing though.