We stayed at POP in both 2004 and 2006 and saved lots of money and time by having breakfast in our room. Not sure if you're driving or flying, and if you're flying whether you are renting a car (I personally would not stay at POP without a car), but here's what we did.
In '04, we flew. I packed a soft sided collapsible cooler in my big checked suitcase, along with big ziploc baggies, and some plastic bowls, spoons and napkins, because we had lots of these stockpiled at home. After checking in at POP, we drove to the Wal-Mart in Kissimmee and bought the little boxes of cereal, a quart of milk, a big box of the little individually wrapped mini donuts, the little individual bottles of juice that don't need refrigeration, small bottles of water, cans of soda and a few small bags of salty snacks. When we got back to POP, we put the milk in one baggie, a bottle of juice and some water and soda in another, and filled both bags with ice. We stored the extra stuff in the opening in the combination dresser/entertainment center. Each morning and evening, we would refresh the ice, and put in new drinks as we used them. Each morning for breakfast, we had cereal, donuts and juice. We like to eat lunch early, so a small breakfast works for us. We ate this nearly every morning. One morning, we ate breakfast at the POP food court. The wait was long, the place was loud, and the food was overpriced and barely edible. (Other people love the food there, but we didn't.) We had the soda, water and snacks to enjoy in the evenings when we returned.
When we went last year, we drove, so I bought everything in advance except the milk, which we picked up at one of the on-site Hess stations. Next time I think I would just get the milk in the resort food court, because it wasn't that expensive. You could also grab some spoons and napkins there if you needed them. This time, I invested in a rolling soft sided cooler. We transported most of the snacks and drinks from the car to the room with it, and it was much easier for DH to roll the cooler to the ice machine for refills. We had this breakfast for nine mornings straight, and didn't tire of it. I would do everything the same next time, except maybe I would add some fruit, at least the little cans of fruit cocktail.
If you're not going to have a car, you could easily pack boxes of granola or cereal bars, and maybe even the cereal and bowls, then just pick up milk and juice at the food court. I see that you are going solo, so you should have no problems carrying enough for yourself. Once you use that stuff up, you free up room in your suitcase for souvenirs.
Sorry this post was kind of long, but it's my favorite money and time saving Disney tip. DH and I love the POP and wish we were there right now. Have fun!
). Any opinions/recommendations would be much appreciated...
Yes the fiber will do that. I think once your body gets used to it that will stop.
That would be trouble.
and rice crispy treats. 
Also keep in mind that at a counter service, you can always buy a child's size. Some mornings, I just needed a little something to eat to hold me over until lunch and a child size waffle was the perfect amount for me. 
