How to install LVM over RAID

I have a home server that I am trying to install RHEL 9 on. The server has 4 1TB disks that I want to use as a RAID 5 array. Over that array I want to use LVM for storage management. However, Anaconda does not seem able to build this configuration. The installer will either give me LVM or RAID but not the stacked configuration that I'm looking for.

What I want is a single LVM physical volume which is the RAID array. On top of that I can create logical volumes for my file system mount points. This would be analagous to what you get with a hardware RAID.

What the installer forces me to do if I want RAID, is define mount points with fixed allocations which then become fixed size RAID volumes.

I think I may need to do this by booting from an iso into single user mode and building the RAID and LVM configuration before running anaconda to load software.

Is there something I'm missing here? I worry that since anaconda cannot build this configuration that it might be for a reason.