Hi Sharon,
>
> Could this be customised to export from org-mode to latex, and then
> subsequently I build the pdf file from the already converted latex using
> my program 'pdfbuild'?
>
I'm not sure how helpful this is, but I have a small "project" that I
include with other projects that use git for version control. This
contains a shell script (used as a git-post-commit hook, in my case)
as well as an elisp script called under --batch mode. Together, these
export README.org into README.{md, pdf, txt} each time I check in a
give project that uses them. I suspect these might not be too
difficult to adapt to your use-case.
https://git.sr.ht/~mplscorwin/org-git-hooks
HTH
Corwin
