Hi Stephanie,

Great plugin review, very thourough and helpful.

You might also take a look at the plugin Blog2Social, which does similar things, but is much easier to use:
http://www.blog2Social.com and with helpful support.

Blog2Social comes with a neat dashboard to optionally customize, schedule and preview your posts for your individual social channels in one easy step. So you may adapt individual texts or add comments, #hashtags or @handles for individual channels.
You can also select the image for your postings from your gallery.
You may also schedule and re-post articles from your blog archive.

Cheers,
Andreas