Right changed my plans now, I've installed windows 7 onto one of the other drives. I'm then going to update to windows 10 and get the key and do a clean install then recover everything I need from the system images.
Just one little problem though, windows 7 won't get updates. It just sticks on searching for updates. Tried a couple of things but again no luck. Going to clean install tonight when I get home and try again.
Oh, I thought I could use something like magical jellybean to get the key.
I will try your way sounds a lot safer ha.
Thanks for the help, will update once I've tried it.