Hearing a little more about the goals of your scenario we're don't think that will work for you. Any posts you do locally that rely on those local plugins will not work on the server with no plugins.
Also the cloner is primarily for entire sites. It makes a lot of sense to have a functionality to clone sites between servers, which is a very advanced and complex addition that will take several months (but definitely something we want to pursue).
As for server load - WordPress is designed to run with lots of plugins. But there are some problematic plugins that require more cpu/memory. That performance mainly depends on your hosting + site traffic.
As for keeping it clean - we recommend you just use the built-in draft functionality to not publish until you're ready. For the concern about revision clutter in the DB, there are numerous plugins that let you specify limits on revisions. You can also turn revisions off completely by adding a single line to wp-config.php.
Anyway, we think you can achieve everything you're looking for with standard WordPress features. The cloner is actually way overkill for those scenarios and way more complicated / less efficient than what you can achieve with a bit of configuration tweaking on the server. I also can't imagine running WordPress with 0 plugins, although you can certainly do it. It would be pretty plain.
All the best.