Want to have just the content area in my custom page template with just the header

Hi,
I am looking for a custom page template with only the header image and menu and the content area spanning the full width without any side bars along with the footer.
Currently I have been able to remove the lists which have the side bars but the space left by side bars still is empty an dthe content does not stretch to the full width.Below is the code which I copied from index.php and modified. Atahualpa theme 3.7.3
Please help where to modify the code.

--------------------------------------------------------------------------
<?php
/*
Template Name: Custom Page Template
*/
?>
<?php
get_header();
?>
<?php /* If there are any posts: */
if (have_posts()) : $bfa_ata['postcount'] = 0; /* Postcount needed for option "XX first posts full posts, rest excerpts" */ ?>

<?php // Deactivated since 3.6.5
# include 'bfa://content_above_loop';
// Uses the following static code instead: ?>
<?php bfa_next_previous_page_links('Top'); // For MULTI post pages if activated at ATO -> Next/Previous Navigation: ?>

<?php while (have_posts()) : the_post(); $bfa_ata['postcount']++; ?>

<?php // Deactivated since 3.6.5
#include 'bfa://content_inside_loop';
// Uses the following static code instead: ?>
<?php bfa_next_previous_post_links('Top'); // For SINGLE post pages if activated at ATO -> Next/Previous Navigation ?>
<?php /* Post Container starts here */
if ( function_exists('post_class') ) { ?>
<div <?php if ( is_page() ) { post_class('post'); } else { post_class(); } ?> id="post-<?php the_ID(); ?>">
<?php } else { ?>
<div class="<?php echo ( is_page() ? 'page ' : '' ) . 'post" id="post-'; the_ID(); ?>">
<?php } ?>
<?php bfa_post_kicker('<div class="post-kicker">','</div>'); ?>
<?php bfa_post_headline('<div class="post-headline">','</div>'); ?>
<?php bfa_post_byline('<div class="post-byline">','</div>'); ?>
<?php bfa_post_bodycopy('<div class="post-bodycopy clearfix">','</div>'); ?>
<?php bfa_post_pagination('<p class="post-pagination"><strong>'.__('Pages:','atahualpa').'</strong>','</p>'); ?>
<?php bfa_post_footer('<div class="post-footer">','</div>'); ?>
</div><!-- / Post -->

<?php endwhile; ?>

<?php // Deactivated since 3.6.5
# include 'bfa://content_below_loop';
// Uses the following static code instead: ?>
<?php bfa_next_previous_post_links('Middle'); // Displayed on SINGLE post pages if activated at ATO -> Next/Previous Navigation: ?>
<?php bfa_get_comments(); // Load Comments template (on single post pages, and static pages, if set on options page): ?>
<?php bfa_next_previous_post_links('Bottom'); // Displayed on SINGLE post pages if activated at ATO -> Next/Previous Navigation: ?>
<?php bfa_archives_page('<div class="archives-page">','</div>'); // Archives Pages. Displayed on a specific static page, if configured at ATO -> Archives Pages: ?>
<?php bfa_next_previous_page_links('Bottom'); // Displayed on MULTI post pages if activated at ATO -> Next/Previous Navigation: ?>

<?php /* END of: If there are any posts */
else : /* If there are no posts: */ ?>

<?php // Deactivated since 3.6.5
#include 'bfa://content_not_found';
// Uses the following static code instead: ?>
<h2><?php _e('Not Found','atahualpa'); ?></h2>
<p><?php _e("Sorry, but you are looking for something that isn't here.","atahualpa"); ?></p>

<?php endif; /* END of: If there are no posts */ ?>

<?php get_footer(); ?>