For peace of mind buy and hodl for a long term atleast for two bull circles you will be sure that whatever price will be then you will be in profit. DCA method is recommendable for income earners, buy with a percentage of your income and hold for the long term.
For two bull cycle that's 8 years but to just be in the safer side lets lets do 10 years that's a decade before thinking about cashing out some profits. If you just follow the two bull market rule, you might end up selling in a bear market and although you'll still be making a profits but you would have missed out of potential gains that you would have gotten. Of course no body rejects more money so after you dun invest, try make the period why you want sell make e for be during bull market. Trading Bitcoin isn't even advisable because why you go dey stress yourself dey chase small small profits when you go fit just hodl Bitcoin and make easy profits.
The boss you have just make a wonderful points here and it is always advisable to have plans with your investments in other to have Bitcoin investments run for at least for 10 years that's a decade to be able have a potential gains because of the fluctuation of Bitcoin in market one needs to be patient enough to always make use of Long term cycles in other not to miss out anything when it comes to investing in a long term, DCA strategy allow investors to be buying Bitcoin small small in a aggressively manner that one can even think of focusing all his mindset in monitoring the fluctuation of Bitcoin in the market just in the name of knowing the best time to trade or buy Bitcoin if actually the dip happens, so once a any eventually engage in such mindset, the investor will end up regretting of not buying Bitcoin aggressively when he he has the chance to buy, so i will advise to buy now and make use of Long term.