Cpanel will overwrite the server software applications and configurations on the server during installation so there is no point in installing those before Cpanel.
I would however make sure you have all the needed software libraries and base system components on your server before installing Cpanel.
Code:
# yum install selinux make coreutils bzip gcc gcc-* glib* libjpeg libpng gifl*
# yum update
Code:
# cpan
install CPAN
reload CPAN
quit
#
That should help you with some of the bare bone core tools you'll need and then you should be able to get the Cpanel installer with "wget" and run the script to start you Cpanel installation.