Homelab, best storage configuration ?

[Neooostef]

Hello

I'm going to set up a homelab, my configuration is an HP Z440 with an E5-2699V4 and 160 GB of ram

For Storage i have choice with :

2x 240 Gb SATA SSD
2x NVME Samsung 970 Evo 500Gb
2x NVME WD SN700 1Tb
3x Sata Ironwolf 2TB

I have 2 PCIE to dual NVME card, 1 dont need Bifurcation, 1 need Bifurcation (motherboard is ok)

For backup I will use the Ironwolf in raid 5.

What is the best for :
- System with raid 1
- VM Storage, with raid 1

and also what best file system ?

Thanks for answer.