A mathematical price for bitcoin

Disclaimer : I am not a professional. But i have been calculating bitcoin price. Below is the tentative value of bitcoin, considering the value is ranging between 7-8K.
Purple line is 50 weekly Exponential Moving Average and Red line is 200 weekly Exponential Moving Average.
Green line is tentative value of bitcoin.
50 Weekly EMA is starting in dec end and would keep going up in April of 2020.
200 Weekly EMA is starting 4 yrs ago where the value was around 350$ so red line direction would be up.
If the demand remain the same , after the halving bitcoin would skyrocket in first quarter of 2021.
I see buying bitcoin at around red line is cheapest. But if you would ask me , I would be buying now.