All that orange flavoring is fine, I'm sure, but the op wanted the aroma from the orange blossoms, which to me is totally different. I've got some blossoming in my back yard right now and they do smell great, but not so much orangey.
A friend of mine once made a beer that he dry-flowered with orange blossoms. It took a lot, but the result was very nice. Floral, as I recall.