Looking for help with pool configuration

TrueNAS General
1

Hello everyone!

I Have this config:
1016Tb Seagate Exos HDD’s (for single DATA vdev in raidz2)
21Tb Plextor SSD’s with MLC memory (i think for L2ARC)
4*500Gb Samsung SSD’s with TLC memory (???)

and i dont know how to use 4 SSDs in pool and looking for help.

I will store big files (video’s and ISO’s) for torrent’s seeding.

Thanks.