Design "Coming Soon" and "Maintenance" pages with Oxygen Builder and activate them in a per role basis.
A Design Set for Oxygen Builder is included with pre-made coming soon and maintenance pages, so you don't have to spend your precious time. Just grab one from the library and your site is ready to go.
Don't let users in!
Other coming soon and maintenance solutions for WordPress will allow registered users to access the site.
OxyPowerPack's Maintenance Mode let you select which roles should be affected by the maintenance page, and even set a different page for each role.
If you need to present an update to your client, or maybe just show a friend your site temporarily, just pass him the customizable Bypass URL. A cookie will allow him to navigate through your site for 24 hours.
Identify your pages
Having different maintenance pages for different users may make you lose track of them, but pages are well identified in your page list screen in WordPress dashboard.
Don't forget you're not live
A maintenance mode activated notice will be always in the admin bar for administrators, so you don't have to guess why there are no visitors coming.