2- Sell a big part of my coins to buy more at cheaper price later.
I would choose option 2 because it is the most advantageous
If you believe in bitcoin, then this is the best way to increase its quantity, so that you can later sell it for even more and buy even more bitcoins at a low price. This process has no end. But we must leave part of the profit for ourselves to comfortably wait for the price of $100 thousand.