It takes a long time to build up a bitcoin investment.. 4-10 years or longer, so there is no need to be delaying.. and then also once you are investing, it may well be the case that you are goingto stay in longer than 10 years, so it is not going to matter very much if you started to buy at $60k, $80k, $100k or $120k. Sure, you get more bitcoin when you buy bitcoin at lower prices, but there is no way to know BTC's price direction in terms of if you will ever get bitcoin lower than today's current prices, so it is better to get started buying bitcoin, if you wanting to be serious about bitcoin.. rather than fucking around thinking about your entry point.
Determining the direction of BTC bitcoi price is difficult - the price at any time can change at any time, it's better when the money is available then more just don't have to think about the price because the long-term investment goal is 10 years then all you have to do is buy and buy.
Because of the long-term goal --- it is certain that the price of bitcoin will be higher in the future so there is no need to worry about buying when the price of $100K or $120K is not too high but look in the future later maybe the price of bitcoin is never expected by you.
As Saylor said we will be all in on bitcoin by any means.
My way is the DCA strategy.