Looking at this theme's capabilities. One major issue for the owner is that the post/page editor accurately show all formatting as it will appear when published. This includes any added Google fonts, colors, blockquotes, graphics, etc.
So need to ensure that the above customizations will appear and be usable in the editor. Added fonts should show up in the 'fonts' dropdown (I added the TinyMCE plugin). Blockquotes formatting should appear in the editor the same as on the published page, The same for all customizations via Theme Options: the editor should show exact same visual as the published page.
All of this without using child themes, or modifying theme code. And a fully responsive site, with pinch/zoom enabled on appropriate devices.
Is this capability available in the theme?