I have the Betty Crocker Bake N Fill cake pan.
I would like to make my daughters birthday cake using this pan, however, I'm a little weary since I haven't used it yet.

I'm looking for a very moist cake batter, but not something that will crumble or fall apart. I'm thinking of the Pink Velvet Cake Recipe that I've found on this site with the Raspberry Chambord Filling.

Do you think this will work?

To decorate the cake, I'm thinking of using the filling to cover the cake and then using pink sugar crystals sprinkled on top.
I'd then add a disney character (of my daughters choice) sitting on top of the cake.

What do you think?

I honestly don't know how the BakeNFill pans work, but I think it's a cute idea, and it seems to me that no matter how crumbly or delicate the cake, if it's only one layer, there shouldn't be much of a problem with it. I'd turn it out directly on the cake base that I'm serving it on, decorate it and clean up around the edges. If it's two layers, I'd turn the first one out onto the base, put the filling on top and turn out the second layer right on top of that and finish it off like I said. That way you wouldn't have to move the cake around too much. I don't know about the pink velvet cake you mention (sounds intriguing!) but red velvet cakes are pretty sturdy.

I have the checkerboard pan and it also requires a sturdy cake. I use the "durable cake" recipe from here. It has cake mix and pudding so you can change up flavors that way. Very moist cake and would work great in the bake and fill pans, in my opinion anyway. Good luck!