What's happen if someone gets to wait and check the price of Bitcoin before he buy because looking at the price now, I think anytime from now the dip will come since everyone has been expecting the price to push as Donald trump's was sworn in buy he did otherwise by putting his coin at the forefront misleading so many crypto enthusiast.
Don't get bother about the thoughts that the price might fall down since you are not buying Bitcoin to trade it. If you have that mentality like that then provably that you might get bother by each volatile movement of Bitcoin. Also don't ever buy the news since you might fall from unexpected things and you will find out that Bitcoin is not all about buying high and sell low.
Focus on buying and ignore those things that can bother you and make it a habit as long term investor that you target to increase your volume and not planning always to buy at the dip since this is not ideal thing to do. We are talking about long term here so hopefully you don't get bothered by other unnecessary opinion and focus on buying Bitcoin whatever price comes with this coin.