I think it's a good time to buy. Of course there is always a possibility that I drop down even to 6k$. But what if not? Eventually it will reach new ath in the future, so better enter now and Ensure your profit from 7.5k$ level, that waitin' for drop more. For example

Let's assume that you will wait and bitcoin in fact will drop to 6k$ - you win.

But what if now?

What if bitcoin will start his ath raid and you will wake up too late and enter let's say 9-10k$.