Ibian
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August 10, 2017, 01:05:17 PM

[...]
I systematically sell about 1% of my holdings for every 10% rise in price, and I buy back in similar amounts.

I have been employing my system since about $250 all the way up to current prices $3450 [...]

You should for all newbies make a disclaimer that your 'system' requires you to have your bitcoins at a third party exchange. And as you know by personal experience (Bitfinex, BTC-e) it is very likely you eventually lose those bitcoins 'stored' on an exchange (hacked, human error, government seizure, inside job, etc etc). Not even mentioning the Bitcoin Cash you have not received by not owning the bitcoin private keys.
Localbitcoin is an option.