2030 is 14 years from now. If the bitcoin price double every 2 years, the price will be 100 times highers, So each coin is about $60,000. You need more than 16.
there is no any fixed price increase for bitcoin. the price can increase. but it can increase less, or may not increase or may drop also. so predicting about bitcoin like this really doesn't make sense.
but as I believe on bitcoin and collecting more and more as much I can collect so you can also collect bitcoins and wait for 15 days. you possible become millionaire . but prefer your self for loose also.