Add rd.net.timeout.carrier to kernel OS during kickstart

We have a few areas that experience network connection delays of more than 5 seconds and need to compensate for that in our RHEL 7 workstations. I have been able to compensate in the kickstart iso by adding this to the end of the kernel options:

rd.net.timeout.carrier=30

This works to get the kickstart ISO (on a USB) to progress and install the system, however, after the first reboot in the kickstart, the system fail to progress through the rest of the setup due to the network connection timing out in the default 5 seconds.

How can I add "rd.net.timeout.carrier=30" to the actual OS kernel in the kickstart process before the first reboot? Let me know if any further info is needed.