....If you are a holder, then this will allow you to buy cheaper.
Then you're not a holder. A long term holder wouldn't care about exits and re-entry right? If it goes up, buy. If it goes down, buy - Dollar Cost Averaging.
I'm not going to question your own method. You can exit anytime at a profit if you feel like it.
I'm just going to say thatanyone selling now is also at a risk of buying higher if he or she plans to re-enter since BTC has been crushing the market. It briefly breached $40,000 hours ago and I don't think it'll be stopping there. Who knows if correction comes after $100,000? If it does correct, will you re-enter when the new bottom is $50K?