in this thread you’ll also find notes on how to customize scripts for 64. I haven’t done it before (am not a coder at all myself) but it seems doable without coding skills, also there’s lots of nice people here to help if you get stuck
I would also recommend arcologies as another one that works great with 64 non-varibright grids — in my limited experience I’ve found the varibright/non-varibright divide more frustrating than the size, but having never used a varibright 128 grid it seems likely I would be confused regardless since that’s my default state 