I love this name! This is my fave spelling too. I'm not Jewish either, I'm Australian, but to me you don't need to be Jewish to use it. I like these combos:
Shoshana RubyShoshana PhoebeShoshana GraceShoshana PearlShoshana LucyShoshana MaeveShoshana MiriamShoshana MollyShoshana BelleShoshana Emily