Hi @DellRay
It's a little hard to work out exactly what you're asking as there's so much background information about what's going on in your life. I understand that's important to you, but all that other stuff really does make it harder to read, especially in one long paragraph. There's also details missing about the type of Office 365 account (as it usually comes with 1TB rather than 5GB of storage).
One thing I can say is that if you uninstall OneDrive it won't delete any of your data files, but you should make sure that you have them as local copies first, and not "on demand" copies that are actually stored in the cloud.
As far as having files in the cloud goes that's not really a problem for most people as long you don't have all your eggs in one basket. I have something like 6TB of cloud storage spread across OneDrive and DropBox accounts, and some offline copies. Be careful about having your data only in one location like your house, as then it is all subject to fire, theft and other accidents, not to mention decay of optical media.
You might like to start by restating want you want as simply as possible, and then anything I've missed or misinterpreted will be clearer.
