Do you think Bitcoin or Bitcoincash could spike suddenly, say go up 50% to 200% within a week in the next few months?
Why do you mention bcash as well? It's an altcoin that has nothing to do with bitcoin.
Alright, even some parties and exchange sites are considering bcash as a shitcoin. There is no reason to mention bitcoin cash, this just like a way to promoting bitcoin cash.
OP 10% should be considered as the maximum forecast to the bitcoin right now and more than it looks impossible.