You have to use the DA appropriate to your expected climb gradient. That would mean using 1,230' for a 2.5% climb gradient. I also would not request to use a published EO procedure, even if ATC knew what yours was. And if I did ask, I would not expect them to permit lower a lower DA. But if I had an engine failure on a go around below the higher DA, I would follow the published EO procedure. If that means you can not make an approach, then so be it. Your payload has to be commensurate with performance limitations imposed by the weather and runways at your destinations and alternates.