Theoretically, BTC will only be a rebound if it does not break through 100k, but if it breaks through 100k, it may also be a false breakthrough, forming a triple top and entering a bear market in 2020.
Therefore, it is recommended to test with small funds at 120k; go all in at 150k; wait for a confirmation of a crazy bull market at 200k and leverage for more; at 300k, sell your house and car to roll over the investment!
This is the operation method pioneered by the great trader Livermore - inverted pyramid position increase. Exclusive secret, do not share.