If I have money now, I would buy half of bitcoin because in next three months it will double the current price. This is real because it always occur this way after 5 years remember in 2011 and 2017 from the market charts and caps. And this year will break more even.
You are very positive, which can also lead to losses. I mean, if you bought at the time you posted this, you would have profited around 30–40%, which is also good, but still, it doesn't double your investment. But again, you bought it at a cheap price, which is why it is always best if you can buy anytime and accumulate it because the price keeps increasing. Also, if you still wait until you can afford to buy a whole bitcoin, then for sure the price at that time is higher. It is better to buy it in small amounts than one time.