I have been wondering what could possibly be your definition of a good calculated risk taker when it comes to Bitcoin investment? Bitcoin investment is very much open in such a way that anyone can invest in his or her own pacing, according to how much you can comfortably afford which differs from one to another, I don't see much of the calculated risk when you are investing according to the size of you pocket after ensuring your basic needs are taken care of with the mindset of making a provisional emergency funds , invest with an amount that you will not be needing for a long time, that way you can comfortably grow your asset with a peace of mind without ever considering that you are taken risk, because Bitcoin investment is not really as risky as most people think it is.
You basically described what risk management is for Bitcoin investment

Other than that - there is no need to worry or drop a single nerve on it.
There is not a single more stable investment than going in Bitcoin.