And for what it's worth, I'd take a first born girl over a boy any day of the week. Actually, I have no problem with having an all female cast. Kids in general are far from perfect, but girls are cuter in their child years, and twice as loyal when they're older, imo.
Just ask my father, he had 6 girls and one boy under this oppressing regime and he still considers himself the luckiest guy in the world, they're just so much better to him. I'm pretty sure he wouldn't have minded having 7 girls (some say he already did, the jury is still out on that one).
(Also, if teen pregnancy is your biggest concern about having a girl, I know guy who can surgically remove wombs from new-borns. It's as simple as clipping your nails. Check your PMs)