How much are you willing to risk on this Bitcoin horse winning the race?

Get to that risk point as fast a possible, then HODL and don't worry about DCA.

Nobody knows for sure that Bitcoin can win the race because it is attempting to displace a fiat system that has had a 100+ year head start. This fiat system is controlled by a group that won't go down without a fight.

In my mind, Bitcoin will be successful when 60% of the people in the world are actively using Bitcoin.