So, I don't think Bitcoin Cash is a good idea but this post isn't to debate it.
When Bitcoin Cash exists and it is tradable I predict that many Bitcoin holders will sell their Bitcoin Cash to buy more Bitcoin. I don't think the reverse will happen as much.
It is what I will do. I admire what you are trying to achieve but I think the price may fall pretty quickly.
Prepared for downvotes.
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From @viralus