We have 5 kids of various ages and have stayed at all 3 levels (Value, Moderate & Deluxe). Personally, with just a 4 year old you may want to stay at a Value or Moderate with a nice pool and exciting kid themes (eg. AOA, All-Star Movies). CR is not kid-themed and has a mediocre pool. The main advantage, as has been repeatedly stated in this thread, is the proximity to Magic Kingdom.
An AOA family suite might just fit well and save you some money. Enjoy your trip!