So congrats, and just fucking cash out a little more so you can keep riding this wave without remorses with the rest of your (huge) stash.
Ok. Extracted just north of $1M @ $14,500 USD/BTC.
Once the wire hits my account, I'll load up for round 2.
Great. Now you have also bought some additional time to reconsider your position and next steps... using only a small part of your stash. Wherever the price goes now you did the right thing in the path of balancing your portfolio and securing your (wealthy) retirement.