I have three kids, and when they were younger (say 4, 2, and not 1) we did lots of breakfasts. Ohana and Topolinos are so great because they bring the food to you - which as a mom I appreciated. At 3 and 1, I don’t think you’ll miss too much park time and it also sounds like you’ve been before and will go again. So if you don’t get ride something - oh well. My kids are older now and they still appreciate one table service a day. Breakfast is also often the only time all three of my kids like the same food choices, so if I had time on a trip, I’d likely do a breakfast everyday too.
Ohana and Topolinos bring the food to you, which cannot be overlooked as a mom. Garden Grill will provide you with a break in Epcot, though keep in mind it’s not on the same side as the Skyliner drop off. Tusker House I would consider swapping for lunch - the character interaction there is fantastic but it is expensive if you don’t think everyone will like the menu. I’d keep the ressies for now and after the first two days, you will know if it’s too much. Have fun!