First, thanks for the great comment (might want to add that as a 1000 star rating and review :)
Anyway, this is one of those things I wish was possible as do many, but with WordPress, setting the page template doesn't work for the blog. A theme has to be coded to allow the choice of a left layout, right, or full width.
Long story short, you can only have a blog layout with a right column with this theme. My Pro version offers a second layout option of a left sidebar column, but at the moment, it doesn't have a full width layout, although it's something I can consider adding.
For your other question, I'm not quite sure I follow what you want to do with the titles/heading ?