Woohoo- you'll have to tell us all about it when you finish your first one in July!!! I'm the opposite. I like long distances, because while I have endurance to take me for hours and hours, speed is something my body simply refuses to do.
Do you have a local tri club in your area? Most tri clubs (in our region anyway) are really multi-sport clubs who are a great wealth of information and support for us multi-sporters (be it du's or tri's).
Best of luck in July!