if you don't want to take the risk, then wait for Bitcoin to reach $17k, because judging by the TA support from Bitcoin is there,
but if you are impatient and want to buy it at a price of $19k I suggest buying in stages, because it's a good strategy for minimizing risk.
Buying at 19k is not a bad idea, the price is still very friendly and if it drop to 17k their is no need to regret buying when the price was at 19k. Before Bitcoin drop the price of bitcoin was more than time ls 2 of 19k, it is very sure the price of bitcoin will be more than times 2 of 19k, hodling is just the way.