Are you able to upload the images used for the demo?
There are few colours so I believe the images you used would be perfect candidates for the filmstrip technique!
The experiment would test to see if your demo can run on one bank!
To do this we would make your image sequence into one long vertical .png
(If we exceed the length of the .png format (because your animation is very long we would make several strips and stitch them together as one large .png)
We would then include the .png as a scroller and code the jumps from one full screen image to the next achieving the exact same effect but utilizing much less space!
You've got me hyped up!

Absolutely yes, good idea!
You can find raw BApple image source into GDrive RAW_IMG_SOURCE dir:
https://drive.google.com/drive/folders/0BwZTDuyjKFEuczZxNnJ4Zm9jd1E?usp=sharing
Convert with: DATimage.exe *.png -mic2 -mtc2

BApple demo use 2979 png (320x224), one palette and four banks.

Thanks
Ciao
BEY