You can use this WordPress plugin to force users away from the default WordPress login and registration forms. Users attempting to access "/wp-login" to login to WordPress will be redirected to "/customer-sign-in". Users attempting to register via "/wp-login" will be redirected to "/pricing".
This plugin will still allow logouts through "/wp-login".
You may also be interested in the Inesonic Force Login URL plugin <https://github.com/tuxidriver/inesonic-force-login-url>. Both plugins are used by Inesonic <https://inesonic.com> infrastructure.