Many predictions spreading in bitcoin but we really do not know if this could happen. Possible to reach high price by year 2021 but no one can give an accurate price of btc. Well, if we are willing to have btc this time we can accumulate on what we can afford.
All of that is the only prediction, and we will see many predictions will happen in the future. Bitcoin itself can hit to any price, and we don't know how much the price will increase. But if the price can hit that price, then I am sure all people who own bitcoin will be happy, and they will make a lot of money from bitcoin. If everything has ready, bitcoin price will rally to the higher price, and that means, we can prepare to sell bitcoin.