I've said this multiple times on this forum but buy at a level you feel comfortable with buying at. You will never time the bottom or the top perfectly. If you're confident about your investment in BTC at 9k, great. If you're confident in your investment in BTC at 10k, great. It's up to you where you decide to buy. No one here can predict the future price of bitcoin so it's always a good strategy to just buy and hold.