I fully agree with Tim here - don't make things more complicated than necessary! Start with standard Org and the standard export, see how it works and adjust from there. At the far end you can end up with a custom exporter based on ox-latex, but which gives special meanings to certain elements - this is what I ended up with for my CV in ox-awesomecv (
https://gitlab.com/zzamboni/org-cv/-/tree/awesomecv), but this was after a lot of experimentation and playing with the default Org exporters. Ultimately it depends on what type of document you are producing, so there can be no single all-encompassing solution.
But really, start simple. Org and LaTeX are both complex enough as they are.