If you know you ready to hold bitcoin just not that you talking about a long-term investment, because holding Bitcoin for long would be more profitable, than holding for short-terms. There are various strategy when it come to investing in Bitcoin (hodl). So before thinking of holding you should know the various methods you can use in accumulating bitcoin.
*DCA (Dollar-cost averaging) : I will try to put it in a simple form , this is the purchasing of bitcoin at any price interval at a fixed time either monthly or weekly. With any fixed amount, you can even start with $10 , purchasing $10 worth of Bitcoin weekly irrespective of the price (either whe it's low or high) . Such method would be best for now as bitcoin price as increased. It also help to prevent bad timing .
*Lump-sum purchasing: this means going all in at once, purchasing with large of amount money at once inorder to have a good head start with your accumulation, expecially for those with good cashflow. But this time around I won't encourage such methods, because using such method this time around when there's increase in price won't be nice expecially for an individual that is only interested in short-term profit ( it would like his gambling with his money). But is the best when it come to buying the dip though when you have a good cashflow.
So I would advice you start with DCAing at first in your accumulation, set aside some money (like a reserved funds) to buy the dip , during the upcoming halving they would probably be a decrease in price . So you can use that opportunity to secure a good quantity for yourself with DCA and buying the dip , to hold for the upcoming bullrun , if you're the type that really believe in Bitcoin you can hold for like 4-5 years or even more than .and before I forget always DYOR (do your own research), before engaging in any form of investment.