Your dress is beautiful! I think because your dress is low cut you can get away with a simple pendant necklace. As for earrings, it may depend on how you decide to wear your hair, but I would probably opt for a simple diamond stud, or a small drop earring.
I agree with Rebecca; statement earrings and a bracelet to match would look great with your dress. I don't think a necklace really suits the neckline of your dress; however, if you wear one, keep it dainty, otherwise it'll just take away from it!
A simple gold or silver necklace should go with the dress since the dress already has a nice bling area. Earring depends on your hairstyle. Try to match your jewelry to your dress so it blends and doesn't take away from the dress. Do you have a tiara or hair piece yet?
Some earrings to match the chest bling would look great, you could do any type of earring especially big and bold! I agree that a necklace would be too busy if you are doing a veil I think one with some bling around the edge would look fantastic! Or a plain elbow length one! Also, LOVE the skirt of your dress!