Need help: Molasses Bread

Should I increase the yeast content?  What do you all think?  What variations do y'all (or you all) foresee?

Molasses Bread

1 cup whole milk
1/3 cup molasses 1/2 teaspoon active yeast 3/4 cup all-purpose flour
3/4 cup rye flour
3/4 cup whole wheat flour
3/4 cup rolled oats
1/4 teaspoon salt
Scald milk, and cool rapidly to "blood warm."  Once cooled, mix milk, molasses, and yeast; do some dishes, and allow to air dry.  Slowly add flours, oats, and salt to liquid mixture.  Cover bowl with plastic, and allow contents to sit for some hours.  Spoon into oiled muffin pan, and/or shape as 1/2-inch thick round.  Bake at 400 degrees F.