In my previous post I meant cubes of papaya, not papaya juice. It is about the same thing but eating the actual fruit is more satisfying and digested a bit more slowly.
I like JD's suggestion of using milk and cereal because I would rather not eat egg whites twice a day. I have those for dinner on my present menu. I compared Cheerios to oatmeal and concluded there is about twice the nutrition in oatmeal as Cheerios for the same calories and much less sugar. So I would go with oatmeal.
In a side by side comparison:
1 package of oatmeal = 106 calories, 3/4 cup of Cheerios = 118 calories.
Protein, oatmeal = 3.8 grams, Cheerios = 1.9 grams.
Potassium, oatmeal = 110 mgs, Cheerios = 60 mgs.
Magnesium, oatmeal = 39 mgs, Cheerios = 20 mgs.
Fiber, oatmeal = 2.5 grams, Cheerios = 1.6 grams.
Sugars, oatmeal = .3 grams, Cheerios = 13.1 grams.
Actually what I would do is measure out 1/3 cup of Old Fashioned Oatmeal, which is 100 calories, and eat that with one cup of skim milk. This works out as follows:
Calories (100 + 100) = 200 calories
Protein is (9.7 + 3.

= 13.5 grams.
Potassium is (446 + 110) = 556 mgs.
Magnesium is (39.5 + 38.6) = 78.1 mgs.
Sodium is (144 + 153) = 297 mgs.
Fiber is (0 + 2.5) = 2.5 grams.
Instead of using 2% milk, to add some fat I would use a walnut. Each walnut half appears to have about 13 calories and about 1 gram of fat. I'm sure the saturated fat is OK, but I would rather eat walnuts. For sweetener I add Splenda.