With regards to DCA, you keep on buying bitcoin regardless of its price, so the higher its price gets, the bigger the profits those who have started DCA years ago. But if you are starting to buy at its peak price, I would say that won’t be ideal to do. You are only increasing your risk of losing, even if you say you are here for long term hodling. It would still more advantageous if you start buying at a low price and certainly sell when bitcoin price reaches an all time high.
However, reaching $100k or $150k will always be possible, but I just don’t think these will definitely happen before halving, but most probably by the end of the year, we can see bitcoin reaching these price range.
I do agree that 100k by the end of this year is quite possible, not sure about 150 but that could happen too, depends on how we go on. I understand that life could be a bit troubled and not all we want could happen at any given moment, but we should probably consider this as possible.
I feel like the most important thing right now is to keep holding because if we believe that it will be 100k then we should be expecting it to grow, so there is no reason why we shouldn't really see something that big. I get that it is going to be difficult, but it wouldn't be impossible neither, it could happen. So holding, and even maybe accumulating some more, no matter if it is high now, could be a great idea to wait out until it reaches that 100k.