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#11
^^ This ^^, absolutely, for the same reasons and ....
I'm always wary of large drive storage. Whilst the volume capacity might seem attractive - and convenient, every thing in the one place - think of the repercussions if the drive should fail, and how much data stored in that the one place might be lost.
Best left for backups rather than primary data. Multiple drives much easier.
Sorry, bit late now, but you didn't need to buy a Win 10 license, your Win 7 license would've served to upgrade your system to Win 10, even if it is a clean install.