I highly recommend taking your time and reading through those previous topics.
They cover and discuss the pros/cons of scenebreaks (and others) in-depth.
I'd also recommend checking out that ebookcraft talk, where she describes the reality across thousands of books + dozens of storefronts + running across every kind of obscure reader/use-case out there.
Hint: A ton of the work is redoing old/crappy/poorly-done ebooks, and "bringing them up to current standards". (That's a huge fraction of the work I do too!)
Learn from the mistakes, and try not to repeat them.
Do your best to follow the standards, while still keeping in mind the actual readers. (Like
use the actual Unicode characters, not ant-sized images of obscure characters!!!)
- - -
PS. On MobileRead, there's a multi-quote button. It's right next to the QUOTE button.
You're able to gather+respond to multiple posts in a single post.
It would help keep from flooding the threads with multiple tiny responses minutes after each other.