Bigger logo will not break your layout. Additionally there is a nice optional site description when a user hovers on your logo
Login Box
A sleek log-in box slides down when you click on log-in button, give it a try. This header log-in feature is optional.
Optional Header Search
Header search can be disabled/enabled.
Dropdown Menu
Top menu with unlimited dropdown levels, current-page highlighter, and arrow indicators.
Header Intro Area
This area is called "Header intro" it contains a title and description text, you can completely turn it off to save some space, or leave it enabled and customize it's content.
Title and Description Text
Title: has numerous options. Text: If not disabled, the following can have custom text: a page, all pages, a single post, all single posts, a single portfolio item, all single portfolio items, blog archives, portfolio index, 404 page, search results page. Custom text can be blank.
This is your theme primary sidebar, which by default is displayed on every page that has support to sidebars.
Lorem ipsum portfolio item
Lorem Ipsum
Phasellus id massa auctor nisi ultricies iaculis. Etiam sit amet arcu dolor, eget venenatis nunc. Nullam tincidunt fermentum ullamcorper. Integer vitae dui eros, eu malesuada orci. Aliquam convallis adipiscing arcu nec tempus.