I would try printing it on its edge, below is a propeller I printed and it turned out fantastic:
This is what the support material edge looked like:
Those little hinges on the ends may prove difficult though, you may have to implement something like Meshmixer if the Cura auto support won't generate a support structure. As for everything else in your list of prints, I don't think they need support structure. If you are not sure how the piece will print the "Layers" view in Cura is really quite helpful.
How about this, model it completely flat and then heat shape it after printing?
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