I don't think bitcoin will be able to grow to 100,000 USD in 2018. In my opinion, bitcoin can grow to $ 40,000 dollars.
This will lead to the capitalization of the crypto-currency market in $ 2 trillion.
When that happens that bitcoin reaches $100k in this year then it will again be the talk of the whole wide world, I am also wishing that it would happen so that many people will encourage to invest again and so that those who had invested last year when the price is at $19-$20k can now have the chance to gain when they did not panicked at all.
100k is quite big price and a lot of coins meant to be hold for this whole year then there is possibility for prices to reach near 100k which is not possible because people are not so patient to wait for so much long time so in my view it will take more than 2 years to reach at that higher level,