I disagree with you that Bitcoin is overvalued, but I would rather say that it's expensive at the current price. Being expensive doesn't mean it can't move higher, or doesn't have the right to, so let's be guided.
Also, I don't see how Bitcoin would hit $10,000 as you predicted anymore. Go through its history, and you would realise that it has not been hitting 10% of its ATH in recent history, let alone 1%.
Aside from the history, Bitcoin's price is being solidified with diehard investors' funds and those of institutional investors. These alone should stabilise the price above $10,000.
Yes, Bitcoin is never fallen below 10% its ATH (with one exception: second part of 2011). But Bitcoin has never seen an economic crises as well. The following creases seems to be deeper than the 2008 one because the boom accumulation has been much greater than in the previous time (before 2008). The bigger boom - the bigger room (for crisis).