Eric, you are indeed blessed.
Pardon me while I reveal my sexist nature. I belive a first girl is better than a first boy (sorry, George). As a father of 7 (gjwandkids, you're a wannabe ;-) jk!) I feel qualified to have an opinion. You see, when a girl is 4-5 yrs, she really enjoys helping mom in various useful ways. On the other hand, a boy, at age 4-5, basically wants to destroy things. This advantage tends to invert itself at puberty, though.
One other thing to look forward to, Eric...you will adore your newborn at birth. And rightfully so. But when the child hits 3 months or so, the personality starts to appear, the responses begin to get more personal, and your love will go to a new dimension that cannot be described.