Have you gone to an orientation? If not, you should go to the orientation, and whatever classes you have to take before you can get licensed, just to get an idea of what you're in for and what to expect.
My husband and I are in the same boat. We tried and tried to conceive on our own, and it's not happening. Well, we know why now, but we decided not to go into debt trying expensive treatments. So we are in the process now of getting licensed. It's a long process, and different states require different things, but we are very excited.
You can decide what age, sex, anything. Where I am, they have to disclose everything before you decide if you want to accept the child.
Like I said, I would go to the orientation and the classes and see what you're in for. There's no obligation.
good luck!
Tonya in Oak Harbor, WA