Stick with Windows 7. 10 has a myriad of extreme privacy issues on top of the fact that a lot of the time it will just flat out not work at all and forget up your computer.
It shoves advertisements and windows store and other useless features down your throat, doesn't let you refuse to install updates, options you can't disable unless you have enterprise edition, completely insulting any sort of experienced users. It's generally undesirable.
is sticking with 7 even an option for you or will it somehow wake up and update in the middle of the night
You can thankfully prevent this by installing
GWX Control Panel, disabling the get windows 10 app, disallowing windows 10 upgrades, deleting windows 10 programs, and enabling monitor mode. (They're just buttons, press them and it does it all automatically.)
It'll sit in the background as a watchdog to stop anything windows-10 related from happening.