You have a couple options:
(1) modify the header.php file via child theme
(2) move your main menu to the Secondary menu location.
Option two is built into the theme, so when you move your menu, you will automatically get a full width container for those extra big logos and/or site titles. Please note that if you go with option 2, your menu styling will be a bit different. If you decide to modify the header.php file, you will need to change the following containers with classes in the header area:
col-md-7 for your menu container, make this smaller to say….col-md-6
Then your logo area container from col-md-5 to col-md-6
Both need to add up to 12.