Well, look at it from a different aspect (not saying your plan is right or wrong, I just LIKE numbers).
For convenience, and yes, I realize this will not be true of every meal every day, but let's say each meal takes you an hour, and you are seated exactly on time. You start eating at buffets exactly when you are seated, and served order meals immediately, where it takes fifteen minutes for the food to arrive:
Tuesday: Boma 8:20-9:20; Yak & Yeti 12, eat 12:15-1:15; Aloho Dinner Show I don't know how long after you're seated the food arrives. It could be 5:30, it could be 6, it could be 7. The time between when you finish eating breakfast and when you start eating lunch is only 3:05. The time between when you finish lunch and when you start dinner is a more reasonable 4:15 to 4:45 to 5:45.
Wednesday: Akershus 11:45-12:45; Biergarten 5:45-6:45; Kitchen Sink not before 10, what with staying for Illuminations, then getting to and waiting for a table at Beaches & Cream. Okay, not bad, Five hours between lunch-end and dinner-start.
Thursday: Liberty Tree Tavern 12:05, eat 12:20-1:20; Crystal Palace 5:15-6:15. Just under four hours between when you finish lunch and when you start dinner. Then, I think you said somewhere else that you really didn't expect to eat much at Hoop-De-Doo, that you're going mainly for the entertainment?
Friday: Maya Grill 8:00, eat 8:15-9:15; Planet Hollywood 12:00, eat 12:15-1:15; Spoodles 5:05, eat 5:20-6:20. Three hours between the end of breakfast and the start of lunch, 4:05 between the end of lunch and the start of dinner.
Saturday: 50s Prime Time 12:15, eat 12:30-1:30; Citricos 5:55 eat 6:10-8 (exception to length of dining time due to restaurant ambience, and opinion that you should sit and relax for a change

). Four hours and ten minutes between meals.
Sunday: 1900 Park Fare 10:45-11:45; 'Ohana 5:00-6:30 (see 'exception' under Saturday

). Five hours fifteen minutes between meals.
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You ask how much time we put between our reservations. My response,
for me: More than that. In my opinion (and again, for me), your meals start too close to the end of the previous ones to be of any value to me. I simply would not be hungry for lunch a mere three hours after finishing breakfast.
I do realize the likelihood of being seated / starting to eat based on the timing in my examples is extremely rare, if not downright impossible. These numbers are just samples, to display a possible scenario.