Wellness Core is a great food.
However, every food doesnt work for every dog... you may want to consider ordering some samples online before you make the drive... Chloe may turn her nose up at the food, or it may just not agree with her... you just never know until you get the food in front of them.
Changing over from IAMS I am sure you will notice a HUGE difference in her coat.
Good Luck and Kudos on taking the time to find the best for your little one