I'm not that optimist about Bitcoin. Why :
Less interesting for miners to mine = decrease in Hashrate. Read this article if you want to understand the importance of Hashrate : https://qz.com/1127817/bitcoin-cash-bch-price-could-lead-to-bitcoin-death-spiral/
High competition from altoins. The emergence of Bitcoin Cash, Ethereum and Ripple have taken Bitcoin out of the spotlight.
ICO's are a booming economy. The large majority is based on Ethereum technology rather than Bitcoin.
Bitcoin is now a shortable asset. This means that many investors can integrate altcoins on long positions and short bitcoin to add diversification to their portfolio. I would go for this strategy.