Awesome, yes! isnt the saa1064 a little gem! i was going about it with individual 4511 chips and your right! it was going to be a nightmare of ics....
im having a bit of trouble getting your sketch to draw onto the displays, i have wired them according to the instructions in the sketch and the chip to the tutorial as you mentioned, im wondering maybe the memory chip, in your original schematic the sda and scl pins were around the wrong way, i found that one and corrected to the pinout on the datasheet, but im still stuck!
i do have to ask though, why have you included the eeprom? i can figure what wour using it for,