I think you may be better off reducing the length of the animation considerably. There isn't a lot of action or exciting twists and turns throughout a lot of it, and because a lot of the animation is simple, having such a long running time can quickly make things boring.
It may also help with your budget for this. If it gets cut down in running length it may work out better for you. It may be hard but try cutting it down to at least half the length of this one.