I actually never did resolve the issue but I did find out what the problem was.
The data center for my dedicated server, like most if not all the others, has some provisioning of different OS's.
Even though their provisioning states that it is Centos 7 Minimal, their "kickstart" also installs what THEY consider to be "needed packages", this included Postfix for one, and several, several others.
I may have mentioned already but I'll mention it again, when I provisioned Centos 6 minimal through my data centers provisioning system, it too installed Postfix and some other packages; however, using yum to remove and purge Postfix before installing CWP on Centos 6 did work. Unfortunately for me in my case, I want to use Centos 7.
This was not the case, however, for when I provisioned Centos 7.
I may be wrong but it seems that your only options when you face this is either:
Using your KVM/iLO to install your own downloaded copy of the Centos 7 min iso on your server OR taking the time to find a list of all the packages that CWP installs then use that list to double check that NONE of them are installed and/or remove them when you do find them before installing CWP
I suppose another option would be: If you are using virtualization on your dedicated server such as Proxmox, then creating a Centos 7 vm for you to use solely with CWP.
I really like CWP but I wish it had an initial check for packages so it could warn you aka. "These packages are already installed on this machine, please remove them, reboot your sever and restart the CWP installation"
Good luck to you!