I am guessing you mean SLOG and L2ARC? I would skip both for now. SLOG only helpful in sync writes (and has special requirements for the device like PLP) and with 32 GB of RAM, guessing you are okay without L2ARC, at least for now or proven need by looking at arc_summary in CLI. NVIDIA won’t be supported under default 25.10 Goldeye due to NVIDIA driver changes. See NVIDIA Kernel Module Change in TrueNAS 25.10 - What This Means for You
Attaching info (reasons) on both choices below.
BASICS
iX Systems pool layout whitepaper
Special VDEV (sVDEV) Planning, Sizing, and Considerations
SLOG is not a write cache. You only need it for sync writes. So databases, Block storage (iSCSI, zvols for VMs), and NFS.