I do the same, let them fill out the brood box before adding another box.
All the boxes were full of capped honey and no place to store them. I figured the bees would get off to a great start with having so much in reserve.
The frame of brood I put in was more than 50% capped. The hive should have a nice population boom in a week or so. Not long after that, the brood that the queen laid should be emerging. I'll check it in two weeks to see if the queen went down into the deep or moved up to the top.