Yes!!! Congrats, Magoo! Oh that news makes a "blah" day a GREAT day! That's just wonderful and she'll be in my prayers tonight.
Going to a store, especially a "baby speciality store" is a good idea. Even if you tell them what you're doing and take measurements from the cradles they have, any decent salesperson should let you do that --if anything, for future sales--can't make rubberpants in the woodshop, afterall! I worked retail for many years and certainly would not only allow that, shoot, I'd probably say, "tip the rocker on it's side and trace the rockers on some paper" and ask that you keep me posted on the project!
Hoping you get a salesperson like I was!
Gosh, I'm grinning like an idiot! Guess I really needed some good news today. I'm so happy for you and your kids!