That’s about 600 pads ?
The first PCB package I bought (For a lot of money because I was young and had none) was limited to 500 pins. Times have changed
Naming all those pins without errors is not very trivial.
There is a project to copy pin naming info directly from a dasheet PDF into an spreadsheet progam, where you can edit it, and then run a python script to extract an Eeschema symbol from it. If should not be hard to find if you know it exists.