Is Boma that good? Yes.
Do you have "too many" buffets? No. On the DDP your kids are limited to the kids' menu at all restaurants, and many people find the kids' menu.....limited. At a buffet, while there is always a section with traditional "kids choices", children of all ages are welcome to sample everything the buffet offers (and picky adults are free to dine on plain chicken nuggets and mac-n-cheese to their hearts' content).
I think your choices look just fine.