That's really nice average mate. You can easily gain bigger profits and considering you have already (almost) doubled your investment with this rate. That is already a good success point for you and now it's your own decision whether to increase your profits more or just take what you have right now in your portfolio.

Now, since its open discussion if I were you, then I would continue your DCA methodology considering you are doing it perfectly. I mean bitcoin is non ending asset, it's growth is entirely based on demand and supply method and it was meant to grow in value eventually. This gives us crazy upper hand in the DCA. It's both volatile and beneficial that way to keep up the demand. Happy DCAing mate.