ProxMox 7.2 VM Setup any Improvements?

[NasaX]

So i seted up for some of my clients Dell R720 as there main server for multiple VM’s

Hardware:
Dell R720
2 x CPU E5-2650 v2
128 Gb DDR3L-10600R
5 x 300 Gb Dell SAS + 200Gb SDD
2 x 1Gb Port + 2 x 10Gb Port
Extra Nic 4 x 1Gb Intel

Os:
ZFS Raid-Z2 4 HDD + 1 HDD Spear + 1 SSD Cache
1 Linux Bridge containing 2 x 1Gb + 2 x 10Gb (has IP Set up )
1 Linux Bridge containing 1Gb on the Extra NIC for WAN1 (no IP)
1 Linux Bridge containing 1Gb on the Extra NIC for WAN2 (no IP)
1 Linux Bridge containing 1Gb on the Extra NIC for WAN3 (no IP)
1 Linux Bridge containing 1Gb on the Extra NIC for WAN4 (no IP)

VM’s:
VM1 for Unificontroller
VM2 pfSense used for Firewall/ pfBlockerNG /NTP/OpenVPN
VM3 Windows 10 PC
VM4 WIndows 2016 Server
Lan Side running 10Gb network
ofc iDrac access via OpenVPN

Ok now what is can by an improvement of my serup ?
Any Sugestions?
Possible future use to add VirGL GPU not shore what GPU to use as I head some GRID K2 but they are unusable so any suggestion,what to use ofc low cost?
I tried using a Linux VM as my PC on VM3, my RMM dus not support it

[wendell]

Biggest quality of life improvement is probably some larger capacity sas SSDs and not having any mechanical hard drives anywhere.

Otherwise not too bad. Older hardware and maybe some concerns there but not too bad if the client understands it’s used

[NasaX]

Curent HDD in use:

and SSD:

I will look into getting Dell SSD then if I can find any with a nice Life time left