Yep, Proxmox itself is very light on resources, so most is available for the VMs / containers.
Just another point… I’ve had some issues with Dell BIOS not respecting the Power On after power loss settings - usually a BIOS upgrade solves that and 99% of Dells still have “just 1 more” update on the website…
I’d also recommend installing Wake on LAN on that Pi too… then if you VPN in from outside you can SSH into the Pi and power on other things that “accidentally” got shutdown.
MarsAgainstVenus