I used the asciidoctor/asciidoctor-pdf program extensively a while ago, and whilst it wasn’t that bad, it was still a bit hacky, didnt support page breaks for example. But maybe it got better now…
The docs call out that page break is supposed to work in PDF, so I guess it should work now? I've found Asciidoctor-pdf to be pretty incredible in the output it produces — only problem is the arcane config file…