Congratulations!
It is a great bike! The more I am around Jamis's the more I like them. I actually prefer to sell them over the Giants(and shhh I am technically working in one of the first giant concept stores-but we carry other lines also)

I feel you got the better bike and hopefully you enjoy every second you spend on it

I would call them back though and see if they would do a fit, or if there is a shop closer to you that could do a fit- you shouldn't have to adjust the seat height yourself- a fitting should be included in your purchase. The difference in positioning on a hybrid to a road bike is a lot, and requires a fitting to make sure your height and reach are correct. We don't want you to end up with any knee problems!!

Again, Congratulations on the new steed and can't wait to see pictures