Many have commented that the dip is the best time to invest in Bitcoin, such comments are simply foolish. There is no fixed time limit for Bitcoin investment. I think you have enough funds to invest you invest and try to increase it gradually take steps to hold even longer as per your ability.
The extent at which most people talk about always buying at dip can be somehow discouraging to most people in terms of changing there focus from regular accumulation to buy only at dip because they always sounds very convincing as if buying at dip is what guarantee there increment of there investment portfolio, sometimes I feel that most of those who always talk about buying only the dip has little understanding about investment if not they would have only seen that dip is just a temporary opportunity brought through the Bitcoin price drops, so at that moment those who have extra funds will increase there investment or buy at once and move on there DCA instead of just depending on the dip.