I considered that. Unfortunately silverblue doesn’t do live systems and aurora therefore doesn’t either. So a VM is the only way of trying it out. OP stated that they have someone to help with the actual installation so I left the whole create install medium for bare metal install out intentionally since I assume this person will be capable of helping with that.
Also small Markdown help: If you use dashes lemmy will automatically format bulletpoints correctly. You can’t use •s for it. Doesn’t take anything away from your comment, etcher is still the best tool to create a bootable usb drive, but for the future consider using dashes.
There is another downside. The local and global feeds are potent discovery tools. But they only work if you group people with similar interests onto the same instance. Your proposal assumes a certain amount of homogeneity. If everyone is interested in the same content anyway then yes you can distribute it randomly. But all the people interested in Linux memes are already here. If we are to expand our reach we need to have instances catering to other interests.
And it also doesn’t work with international communities. German speakers for example go to feddit.org, precisely because that’s where German content is going to be amplified via the local feed and therefore easier to discover (for people an that particular instance)