NVMe will have a larger queue depth that SATA, which could help some if the cluster becomes very busy, but looking at those specs, it would make me lean more towards the SATA drive with the higher write IO. An AF cluster the caching tier will be used only for writes, so one would think you would want a drive with better write performance.
Also read Intel description of the P4500, it is not made for writes.
Optimized for Storage Efficiency Across a Range of Workloads
This cloud-inspired SSD is built with an entirely new NVMe* controller, optimized for read intensive workloads, and designed to maximize CPU utilization.
I am sure someone will chime in with a better answer.