After you setup your centos droplet, you can do these steps. Make sure your hostname is a FQDN.

1. Change Root Password

2. Update Server

3. Add user

4. Modify SSH Settings

5. Disable SELinux

6. Setup a SWAP file

7. Install PERL

8. Install screen and wget

9. Install Cpanel

Once it is complete, you can access WHM from your hostname, or droplet IP on port 2087