How long will you continue to wait for bitcoin's price to dip? The more you wait, the higher the chances of you making use of some part of the money. Everything you hear and read online are all predictions, no one really knows the perfect time to buy bitcoins. I would have recommended DCA if the money was something you would be getting constantly, but since that is not the case, you can invest part of the money in bitcoin while still studying the market, then you buy more later. With 2 years, your goal of preserving the value of that money will be achieved and you would get returns from your investment. This is way better than locking it up in tradition banks.
It's was before that you will tell someone to wait untill the price of bitcoin comes down before you buy but no matter how high the price goes it will continue to go higher this past few months bitcoin continues to mark new AtH every time so it is better to buy when ever you want to because it will take a longer period for the price of bitcoin to come down, this is something we all should have notice that it will continue to happen the change in price, you want to buy it is better to buy.
The issue of buying you have to be the one to choose exactly when you want to buy and I will suggest that when ever you want to buy you are free to buy when you even adopt the use of DCA then it will make things easier for you, and buying gradually because the truth is you don't have to have a lot of money to be able to buy so it is better to buy gradually untill your goal is accomplished, the market should be a thing of serious intrest and this is why a lot of people are not getting it because they are busy focusing on other things.