Hi Jennifer,
Welcome to the Moms Panel, it's always nice to hear from fellow Granite Staters! The resort choice is often a difficult one, and mostly comes down to budget and personal tastes. If it is within your budget, I would definitely opt for the moderate level. It really is amazing the "bang for your buck" at the moderates when it comes to dining, guest rooms and pools. The decor it's really kicked up a notch too.
Out of the moderates, Coronado Springs Resort is my favorite. One of the nice things about this resorts when you are a family of 4 (plus an infant) is the queen size beds. This is the only moderate resort to offer them, and that little bit of extra leg room is nice when you're sharing a bed! I love the clean, intricate details this southwest themed resort.
To assist you in making your decision, I recommend you visit
www.allearsnet.com and click on their accommodations section. They have a fantastic library of detailed pictures for every resort at Walt Disney World.
Hope this helps!