Hi,
ODFToEPub doesn't rely on the HTML-generation by OpenOffice. It transforms ODF straight into ePub. If you try to generate HTML from the above document you will see it will hang up, while ODFToEPub will be ready in about ten seconds with this 800-page document.
The ePub-file of this document can be downloaded here:
http://www.pincette.biz/odftoepub/Op..._segments.epub
The generated style sheets will always be much larger than the CSS sheets you would write yourself. That is mainly because in ODF there is no selection mechanism as you have in CSS. ODFToEPub will produce about the same amount of CSS entries as there are automatic, global and default styles in an ODF-document combined. There are a bit more of them if Asian and Complex variants are used.
Best regards,
Werner Donné
Pincette bvba