You've got the right idea. But we aren't going to make it to your end game before going through Usd currency collapse, hyperinflation or some similar disaster.
I am inclined to plan on taking a withdrawal at calculated points during the run up. In this way, I will have saved some of the gain in case the power is lost (think Puerto Rico) or internet access goes out, banks close or whatever (think Venezuela).
Some economic slowdown sighs have been starting show up again in past year in Florida. With our economy we tend to feel and notice things long before they start to play out more across country. A few things are starting to not look so great and that has been noticed with a few other people I have talk with on Steemit.