There's an interesting discussion on the topic here https://bitcointalk.org/index.php?topic=1819531.0
You can also check this : https://longforecast.com/bitcoin-price-predictions-2017-2018-2019-btc-to-usd
But a conservative prediction could estimate the value at 60 000$ in a year
Yes, it's a bubble, but people are still gonna try to acquire it for a while, I don't think the bubble will pop soon