You better buy bitcoin now and sell them at peak near block reward halving time or july of next year. To invest in blockchain requires lots of fund, so if you could get much profit out of that bitcoins than try to invest in blockchain based companies and services if you like.
A lot of people will sell thinking the peak is the block reward range of days but there is a big possibility that the price keeps growing and after selling you feel like the biggest idiot in the world... i think im not going to risk it as im long term in here, I will let the gambling for you guys. If I want to gamble I will have fun in the casino with smaller amounts, im not risking my BTC in a shorting operation.