Hi Cute - if it's OK I'd like to come a tiptoeing with you! ;)
I like all three of your fabric choices but would lean toward the grapes with leaves too. The bubbles would be a subtle effect I think, but good too! The birds would give some interesting headless bird effects! But the brown would split nicely apart from the flower colours; I guess I'm saying make them all!
Here's a pic of a fabric I have just cut and I've pieced half the blocks. It's coming up a bit subtle, not much contrast but that's OK - maybe it will need some hollow cubes to lift it, we'll see! :-D The repeat is 12" BTW.