A good entry point into bitcoin would be under 10000. That would mean a sharp correction, which will give you room to run. Otherwise, just buy and hold it right now.
I dont think bitcoin will drop to 10000, 11500$ have power full support and hard to break it. The good enter point for bitcoin is 12000$, if you miss this level then you have to buy bitcoin with higher price soon.
I agree with you Bitcoin can not reduce over $ 10,000 and this is the final price that Bitcoin can reduce at this time. I think Bitcoin prices will stabilize in the next few days and may soon reach $ 15,000