Your choices are all good ones. They are the first ones I would have picked, almost exactly!
Cape May Cafe - breakfast is anything but spectacular, and when we were there they were woefully behind in the ADRs, but the characters are great! Goofy is one of our favorites!
Are you trying to get into CRT? It's much easier now that the princesses are at lunch as well. Although I see you are already doing Akershus.
There's a new Donald and friends breakfast in Harambe in Africa in the AK. I have heard that lunch is great there. It's at Tusker House - it used to be counter service; now it's table service. I haven't heard about breakfast, but if it's as good as when Donald was over in Restaurantosaurus (he's not there anymore) it will be great!
Are the kids too old for Disney Playhouse? Hollywood & Vine has has "Play 'n' Dine" for Breakfast and Lunch. Jo-Jo's Circus and Little Einsteins characters. Apparently it's run at the same time as the regular Breakfast and Lunch in a back room or something. It's brand new, and I don't know anything about it, although I wish it were there in 2005, because we would have gone before my younger DD was too old (she would have been 7). I've never eaten at Hollywood & Vine, so I know nothing of the restaurant, either. Are you there for the "Play 'n' Dine", or just the regular buffet?
Mickey's Backyard BBQ is a bit pricey, but the show is really, really good. There are character meet 'n' greets at the entertainment breaks. It's only Thu and Sat, and it should be great to go in the cool weather when you are there. We went in June, and it was 90 deg F that night and humid! We had fun anyway, but I almost passed out while country line dancing (well, not literally) after drinking beer all night in that heat! (Oh, yes - it's all you care to eat including beer and wine.)
The Garden Grove at the Swan (formerly Gulliver's) has character dinners, but I wouldn't recommend them for little kids. It is a Westin restaurant, not WDW. The food is pretty good. This experience is good for pre-teens and teens especially if they are fans of the characters they have when you go (which change from time to time, I think). When we went last year, they had Rafiki and Timone, and my two DDs are huge Lion King fans, so we went. It's a buffet featuring sea food, but serving all kinds of meat and chicken as well. Great soups. A bit pricey, but not too bad. Fabulous wine list! The characters weren't out that much, but that was OK for us. Actually I think it was one person who came out one at a time in each costume.
Too bad about LTT - I guess the word is out that they won't have characters after Jan 09. So keep trying - it would be nice to see the characters in those costumes and that setting before they are gone. Here's hoping you get a cancellation!
Have a magical trip!