Whatever you do. Full backup first ๐๐ป๐
Personally, I'd go with the clean Fedora install on the new drive and copy your data over as someone else mentioned, then expand Windows once you 100% happy with it.
(I did something similar with WinXP years ago... eventually dropping Windows, so that harddrive just became a data drive)
I tried using Enlightenment years ago - it looked amazing, and then... I found all the bugs, incompatibilities, etc... and it's lackof progress was disappointing.
I tried Bodhi Linux and even they gave up, creating their own Moksha desktop environment too...