Oh, such an exciting time! Congrats!
My advice is this: Remember to keep their diet at 90 - 95% their grower feed, and the other 5 - 10% can be healthy treats. I use Purina Starter/Grower feed, and I love it. Be sure to smell your bag of feed for freshness. Don't buy it too far ahead, so it is always fresh. It can lose nutrious value when old. Another good tip I received and use is to use Organic Apple Cider Vinegar (ACV) in their water a couple times a week (a tablespoon in a gallon of water). It has to be Organic, not distilled vinegar like in the grocery isle. Organic has the "mother," in it (looks like a slimy piece of apple). You can find a bunch of thread about ACV here on BYC. Oh, and probotics .... You can use yogurt (plain unflavored) for them once a week. Mine LOVE it. I mix it in with a little of their feed, so they don't make such a mess, and get every drop of it! Good is about a 1/2 to 1 teaspoon for each bird. Many topics on this on BYC, as well.
I have learned so much from BYC, and I know you will too.
Have fun! WELCOME to BYC ! ! !