I would shoot for a later ADR - breakfast really doesn't take that long at Tusker House. We successfully did it with a 10:25 spot in June. On our day there, they started very slowly changing over to lunch only a couple of minutes before 11:00 - and it was one dish at a time, not sudden. The breakfast items that were left were moved over to the 'cart' in the middle of the floor that holds the bread and desserts during breakfast. One of the dishes that my husband was impatiently waiting on was the salmon - that didn't come out until around 11:15. We had to really kill some time, and then we left right after he finished eating that. I think our server was ready for us to leave, but we were not budging until after tasting that dish.
I also want to add that it appeared that the larger groups were the ones waiting longer to be seated. So, if you have a larger group (we were only 4) you may wait longer.