I don't think it would be a bad idea to call. That would only show how much you want him and how excited you are. I don't knwo if you'll get an answer to your question but it sure won't hurt to ask!

I'm so excited for you that I'm about to bust! I hope all goes well when you get him home. He will be so scared for awhile but I'm sure with all the love your going to give him he will be fine in no time!!
Let us know as soon as you do!!