Yeah you can start with a little team and then expand to bigger one. Double the tech support people every time your customer base gets doubled and increment sales people as needed. The reason why I am saying doubling the tech support people is because the technical support is one of the top reaso...
PhpMyAdmin would probably work for this. http://www.phpmyadmin.net/home_page/index.php Lots of hosts have it pre-installed.
I've been successfully using ShellyCloud for couple of years. It's linux based cloud platform deployable via git push, MySQL support is also available as MariaDB. https://shellycloud.com