vdev design- IOPS questions

New to the forums and I'm building a new personal use system, and looking for insight on how to design my new system vdev/pool to work best for my needs of photo/video editing. My current resources are as follows:

4th gen i5-4570 quad core 3.2ghz
Supermicro X10SAE MoBo
4 x 8gb non-ECC MEM-DR380L-HL01-UN16 (waiting on delivery)
LSI 9207-8i HBA + StarTech SFF-8087 adaptor (waiting on delivery)
2 x Crucial BX500 120gb SSD mirrored boot drives (waiting on delivery)
4 x 4TB WD40EFRX drives...

vdev design- IOPS questions