The thing is only two out of these six actually workI honestly think that you should go for 8 as 8 installs is much better than 6.
Other than that I'd probably backup all your important files, download an iso, of windows 10, extract the contents to a usb stick and boot from that stick. There's an option to eventually erase all the partitions and clean install. it's not ultra super easy but there's a LOT of walk through tutorials on the web.