That's what I did. Unplug the HDD and plug in the SSD and install windows. Then I wiped my HDD and plugged it in and reinstalled my main programs on my SSD and everything else on the HDD.
Oh, I see. Let's say, assuming I have everything on my HDD (windows OS, programs, etc.) right now, so I just unplug the HDD, plug in SSD, install windows, then plug in the HDD and format it?