For what it is worth, I'd start the beef at 350* and after 15 minutes add the other dishes. After about 45 min. you could raise the temp to 375*. You'll probably need to rotate and/or rearrange the pans at least once. Just in case things take longer with a full oven, plan on things being done 15 minutes before you want them to be, in case they need a little more time.
Curiosity killed the cat, but satisfaction brought him back.--unknown, at least to me