I was trying to change more than just one specific page using an "if" and "else" conditional statement. I wasn't sure how to force a second if statement, and nothing I tried was working (such as adding a comma between slugs, or just adding another if statement line). After reading this article about wordpress conditional statements, I realized I could create "elseif" statements and then end with a final "else" statement. Perhaps this was a dumb oversight, but at least I figured it out! Wanted to update in case anyone else read this.
This method is especially useful for breaking up a WordPress into two different sites, sort of. Client wanted a splash page that directed to two different sides of the same parent company website, each with different navigation menus.
Thanks again esmi for the help.
@blachance - sounds like a different issue. You should be able to customize your sidebars using widgets, I believe. You might get more responses if you start a new topic or further research the problem and find a more relevant question topic.