It's impossible to consistently sell near the top and buy near the bottom. Most experienced position traders will tell you to DCA (dollar cost average) your entries/exits in "ranges" rather than trying to pinpoint the perfect time to buy/sell. Entering or exiting all at once usually leads to significant drawdowns and missed opportunities.
In my opinion, the $6,000s and $7,000s are a buying opportunity. I believe we will reach new ATHs next year or 2021 at the latest. We can't know where the next bull market top will be; it could be $30K or $300K. All we can really do is sell into irrational bubble behavior and wait for the price to crash.
Based on the 2015 and 2018 bottoms, I probably won't be selling below $60K. There's a decent chance after the following bear market that we'll never return below $50K-$60K again.
I like your prediction and feel the same about the price.
I found the best way of getting more Bitcoin without regrets is getting rid of an addiction or some unhealthy habit and dedicating the money to buying BTC every month. Just spend some of that money you'd otherwise spend on booze or hookers on BTC and you won't regret it. Trying to fish for tops and bottoms is gambling, nothing else.
I also believe that we're going up in the long run and another bull market when we break 20k won't be 25k or 30k. It's going to be 50k+ I've been watching this market for a long time and we both are probably wrong with that 50k prediction and it will sell some at that level but the price will to to 100k. I did that when we were going to 20k. Took some profit at 7k because I thought the price was already crazy, over 7x the previous ATH, but it did not stop. That's how powerful BTC bull runs are.