I do believe that the Bitcoin price will rise very faster in the year 2021 because Satoshi Nakamoto is going to buy more Bitcoin to push the price up. He has got plenty of money to play the Bitcoin game to take the Bitcoin in its next stage.
You're saying that bitcoin will grow faster on 2021 and you're expecting a X3 to its price by the end of 2021. If going back to a several months ago when the price of bitcoin hits under $5k, we had never imagine that it will go back to $10k as quick as possible and then breaking $23k and suddenly $24k by the end of this year.
The same could be for 2021. Just compute how how much it multiplied from this year and how much it can be by the end of 2021. But $60k is much a safer bet than others which is higher than the price you're speculating. Most speculations will be alive again including the bearish predictions. Everyone is gonna be active when bitcoin is rushing to increase its price.