Regarding the token limit, it depends on the text. We are using the qwen-2.5-vl tokenizer in case you are interested in reading about it.
You can run it very easily in a Colab notebook. This should be faster than the demo https://github.com/NanoNets/docext/blob/main/PDF2MD_README.m...
There are incorrect words in the extraction, so I would suggest you to wait for the handwritten text model's release.