I am 50/50 on this. Is it a good chance to buy and we won't see 6k again or is it a huge risk and it might crash to 2k or even to nothing. Are people buying now or just watching and waiting. There does seem a big volume of Bitcoin changing hands today compared to the last couple of weeks. Are they buying or selling. Why has it gone down so much at the moment. So many questions and few answers. I think it's looking a very risky business at the moment.
Like you said it's risky so what you need here is "guts" to move forward.
No one knows the exact and accurate answer to your questions and never it will. You will just know if your decision is good until you see the result so be ready and enter at any price level and see how it will goes. If your purpose is to just HODL then you have only one actions to be done and that is to hold.
Take the risks or regret later? It's up to you.