3 Column Talian WordPress Theme Layouts

Comment on WordPress Theme Development by Rachel.

I have some thoughts of changing the layout of the 3 column Talian theme wanting the right sidebar to be located 400-600 pixels down its current position while the central column takes this location (post-content / left post / post entry ).
Two reasons for doing this –
1. Giving the central column, where the content located, more space especially at the beginning of the post.
2. Putting one of the best performing context ad – 728×90 Adsense ad under the post title.

It makes the central column having variable lengths – Starting wider and then narrowing down the scroll.
I know this query is way beyond the scope of this template, but any initial direction from you is appreciated.