Best D7 workflow approach for later D8 upgrade

I have been away from the Drupal community for a while and am just getting caught up again.

We need to integrate a workflow of an approval process for node and document revisions for our content in an existing Drupal 7 application. So I was wondering how best to "future-proof" our upgrade so that it will have the simplest upgrade to Drupal 8 later. In other words, it looks like there are several approaches that we could use for implementing workflow of the approval process of our content. These include:

Then there are the additional possible modules of revisioning (https://drupal.org/project/revisioning) and everything associated with the Content Staging Initiative - https://groups.drupal.org/large-scale-drupal-lsd-projects-and-plans/cont... .

So it seems a bit overwhelming, and I was wondering if anyone would be willing to give some brief advice on the best way to move forward in implementing a workflow in D7 that would be most likely to be compatible with changes expected in D8.

Thanks in advance for anyone taking the time to address this.