Customize Wordpress / Custom Plugin

I'm looking for a customized functionality for my Wordpress site (theme built on Bootstrap 3) to hide my site's navigational menu when a user logs into the WP Admin. SPECIFICS: My site will be a subscription/membership site (memberships managed by this plugin: [login to view URL]) with a customized WP Admin menu system (managed by this plugin: [login to view URL]). In addition to the admin-specific items (New Post, Change Pwd, etc.), the custom Admin menu will also function as the main navigation for the site, so the website's actual menu will become redundant and unneeded when logged in (and visually conflicts with the WP admin menu). For the instances of non-member site visitors (and members who are not logged in), the site's actual menu will need to be visible however, so I can't eliminate it altogether - Otherwise I'd just comment it out, etc.. IN EFFECT: Upon login, the WP admin menu needs to replace the website's existing menu. I'm interested in your thoughts on the best method to accomplish this. I assume the theme's code can be modified directly to accomplish it, although that's not my first choice - in the event that I ever change themes, it would have to be done manually again. So I thought maybe a custom plugin could be a better approach. I've searched all over for an existing plugin with no luck. I've found plenty of plugins that hide the admin bar, but that's the exact opposite of what I need. Please let me know your thoughts... FINAL NOTE: I know there can be issues with plugin compatibility, so I am open to alternative plugins to the ones mentioned above, as long as they accomplish the same things and work of course. In fact, If you know of better ones for my purpose, I'd be very interested in your suggestions - Based on my research, these seem really great though. Let me know any questions you have and we'll discuss...