Actually, the simplest thing to do here, would be to upgrade to Pro because the custom templates are possible for posts in Pro, so you’d be able to have two sidebars right on articles.
However, important note, we’ve just updated to version 2.0. While all your theme options should port over nicely, the theme file code itself has been greatly improved, so could pose a problem if you’ve made any advanced customizations.
The design has also been mildly reworked as well, have a look:
If you want to test it out, you have 60 days to request a full refund.