Make an image backup (other than Windows image backup) in case the Win10 goes south.
Or, if you decide to return to 7 later.
I upgraded 7 to 10 on an extra hard drive. I have another Win7 on another hard drive, which I now use. I did not like Win10 at all. If they restore the classic theme, I will consider it. Until then, I am sticking with 7.
Don't hold your breath.
I’m sticking with 7, too.
I imaged to DVD...It takes a while but with the system repair disk you can wash your computer out and reinstall your OS exactly as you had it.
As a precaution I also imaged to a external drive.