[Plugin: WordPress SEO] WordPress SEO & Headspace2

I am a Newbie when it comes to WordPress SEO. I apologize in advance.

I installed WordPress SEO, registered the site with Google,Yahoo, & Bing webmaster tools. I then installed Headspace based on your recommendation. I see it does much of the same things as WordPress SEO.

Q1: Should I be using both or just one?

Q2: I am using a theme from Rockettheme. When I replace the title area of the header.php file with this code

<title><?php wp_title(”); ?></title>

The title is not pulled from WordPress SEO or Headspace even if I deactivate Headspace.

Here is my site: https://www.sanfranciscoanglicans.org/

I have replaced the code in header.php with the origional template code.

<title>
<?php

// Returns the title based on what is being viewed

// Single posts
if (is_single()) {
single_post_title(); echo ‘ | ‘; bloginfo(‘name’);

// The home page or, if using a static front page, the blog posts page.
} elseif (is_home() || is_front_page()) {
bloginfo(‘name’);
if( get_bloginfo(‘description’))
echo ‘ | ‘ ; bloginfo(‘description’);

// WordPress Pages
} elseif (is_page()) {
single_post_title(”); echo ‘ | ‘; bloginfo(‘name’);

// Search results
} elseif (is_search()) {
printf(_r(‘Search results for %s’), ‘”‘.get_search_query().'”‘); echo ‘ | ‘; bloginfo(‘name’);

// 404 (Not Found)
} elseif (is_404()) {
_re(‘Not Found’); echo ‘ | ‘; bloginfo(‘name’);

// Otherwise:
} else {
wp_title(”); echo ‘ | ‘; bloginfo(‘name’);
}

?>
</title>

Any suggestions?