This sounds like a great game! Also, I could help with spriting. For examples, see my Sprite Gallery (album).
Mmmm... :3 Pineapples
This all looks good :D
But dont make the Pineapple be a lie ... like the cake :(
I think the plot itself is certainly interesting, but the humor aspect that you're trying to add with the mysterious pokemon being a pineapple detracts from the storyline.
Nice, a circus sounds like a good idea. should have good minigame possiblilties.