Bitcoin availability will always be there each time you want to make a purchase. The question should be if you will be able to meet the price below what you have sold and how long it will take before you see a buyback opportunity. And what if the market decides to be all positive after you have sold out? Are you ready to accept your decision of selling early and buy back with a higher price, or will you just stick around watching the market move forward in a way you didn't predict?