From an investor's point of view, meaning long term thinking, it's important to give attention to the matter of "when should I be taking profits?"
In my point of view, BTC will likely not have as much energy in it's way up as in the past, for it's major long term growth pattern can be seen through a log curve.
I personaly have a target on the 70'000 USD zone. But, in case BTC doesn't go so far up, will be taking major profits at around 1000 days from the start of the trend.