Overvalued in what way? It's only value is in what people are prepared to pay, Sounds like you just want to catch a cheap ride on the bitcoin train back up.
On the contrary, i´m selling as fast as my asic will mine. I dont trust this bubble. No idea when it will crash or far it will still rise before then.
What makes you think it's a bubble? It's gone from over 1000-ish to 9000-ish a few times the past couple of weeks and always bounced back. Seems silly to sell now imo, unless you're doing day trades.