At what price point do you hope to cash out at least 50% of your btc?
At no point.
I'll start slowly cashing out within 40% of my stash, when / if 40% of my stash is enough to comfortably retire.
interesting idea. i´d like to do the same. hm.. with wife and kids this is a different story. i guess i would start selling tiny amounts around $ 1000,- and try to sell half the coins during the next run-up. the other half stays away from exchanges.