Ah, I see what you mean about black and black - apologies, I didn't twig. I do think that peep toes would be better. The shoes you've linked to look quite high (but hell, I live in flats so anything above half an inch frightens me!). Maybe a slightly lower heel would be better if you're not used to them, given you'll be dancing.
Also, what colour pashmina will you be wearing? If you're going to wear black tights and black shoes with that dress, maybe black would be good (I am usually found in jeans too, but dress up on occasion and am a similar size to you).
Oh, and stating the obvious, but wear some bloody good shapewear. It works wonders, and will definitely stop you looking like your granny.