I think Nicholas is a great choice too. I love SGU too, but this is not the only reason. Nicholas Flamel is known as alchemist in Wikipedia you can read:
Legendary accounts of Flamel’s life are based on seventeenth century works, primarily Livre des figures hiéroglyphiques. The essence of his reputation are claims that he succeeded at the two goals of alchemy: that he made the Philosopher’s Stone, which turns base metals into gold, and that he and his wife Perenelle achieved immortality through the “Elixir of Life”.
Immortal and gold making, that sounds familiar to me.
But the idea with Adam I like too. I am a huge Rumbelle shipper (and my name is Eva 😀 ), so I would love this name too.
Heros don't get their Happy Ending!