I grabbed the free version of SV first with the limited voice. It was sufficient to convince me to dive in.

As far as harmonies in BB. Load the vocal into the audio track. Select harmony from the top drop down menu and let it roll. It will create two harmony tracks as it's default which is plenty for me. It puts the new tracks in the utility tracks from where you can export them to the DAW.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.