Changing Dealers

I recently test drove an XLT at my chosen dealer. I was amazed! The downside, he said that they are going to have an ADM on orders, too.
I was bummed but, in a discussion, group a guy told me that he bought his through Folsom Lake Ford with NO ADM. They are close to me. as well.
Long story short, I'm going to switch my dealers. I need anyone's help as the when I should switch. Now? When I'm invited to order? or after I make the order?
I don't want to lose my place in line. I don't want to be at the end of the new dealers list.

Thanks in advance for any help!!