I like Preston - it goes will with both names. Just to throw another name into the mix someone I know called their Boy Isaac Preston.

My Son is called Aidan Peter. I really wanted Aidan James but our family tradition is that you use your Husband's first name as your first born Son's middle name.
Thanks but I have a nephew called Izaak so can't use that one, also funnily enough both my son Zachary and het son Izaak get Zac for short! I like Aiden, but also know someone with that name. My first son had my husbands name for a middle name too