I have to totally agree, but we've never been really "into" character meals.
Over the years, we've happened upon Cape May as well as Tusker House (I think that was lunch or dinner though, I forget, but it seems there were characters, forget which ones, see what I mean?) Oh, and Hollywood & Vine, many years ago, but my youngest was 2 and shy of the characters, so we didn't really interact.
I'd say for a trip, one is enough. You are taking time to sit through breakfast, which is pretty much the same food everywhere (eggs, potatoes, fruit, meats, maybe smoked salmon at Cape May, but you get the idea, it's nothing special). You see some characters, which is why it's expensive.
If I were a breakfast eater, I'd prefer to do a restaurant where I'm properly served instead of so many buffets (and can order something else like eggs benedict that hasn't been sitting on a warmer so the egg is overcooked). That being said, I don't often eat prior to lunch.
I'd look at what parks you'll be at during what days, things like if you got a challenging to get AP+ like FOP or Slinky Dog, then plan around that park.
I certainly wouldn't do nearly as many as you are planning, though. I would feel like all I did on vacation was buffet breakfasts. I'd narrow it down to one, two tops.