I'd say there you shouldn't wait for a bull run in 2019. Not until 2021, that is.
If you can just speculate with the crypto because this is what is seems to be doing this whole time (Q3 and Q4 of 2018 + Q1 of 2019).
I think let a lot of people speculate as they please because indeed the price movement of the cryptocurrency is not easy to predict and the bull market also doesn't know when that happens even though you have said it but it can also be incorrect.