In the stand mixer, mix together the yeast mixture. Warm water, yeast, and sugar.
Add wet ingredients. Add warm water, oil, eggs, molasses, honey, and vinegar to the mixing bowl.
Combine dry ingredients: Next combine cane sugar, brown sugar, salt, ground flax, quick oats, baking powder, and vitamin C. Add to mixing bowl.
Slowly add the milled flour. Once the dough comes away from the sides and cleans the sides of the mixing bowl, you have enough flour. You might have a few tablespoons left. Let the dough knead on low speed for 13 minutes. If the dough is still too sticky in the last few minutes of kneading, add a bit more flour.