Yes but the camera should be in a place that can’t be physically tampered with easily since someone could theoretically unplug the camera and plug into your home network and see all your computers or other devices as if they had stolen your WiFi password. A small risk but it’s better to hardwire it somewhere they would need a ladder to get to or get a camera system that connects to a central box inside the house.
I’m using a commercial desktop with an i5 Sandy bridge. I maxed out to 32Gb of ram only because I’m running trueNAS, debian with containers, and home assistant. Most RAM goes to trueNAS and trueNAS doesn’t accurately report ram. For CPU, mostly just task limited but I don’t really think thats a proxmox issue. Obviously it’s not going to support an enterprise or even small business but it works for what I need of less than 4 users on my budget.
Proxmox doesn’t really ask for much but I probably would recommend docker for your arm devices.
Apparently you can save it to Google drive then download the Google drive program and make that folder available offline so it downloads it to the computer.
When you setup the Google Takeout export choose Save in a Google Drive folder
Install the Google Drive PC client (Drive for desktop)
It will create a new drive (i.e. G:) in your explorer. Right click on the takeout folder and select “Make available offline”. All files in that folder will be downloaded by the Google Drive Desktop in the background, and you will be able to copy to another location, as they will be local files.