Well, congratulations on your system, I'm sure you'll enjoy using it! It's always exciting getting new stuff to play with, isn't it?
Can you give us a better idea what size/shape room you are putting it in, and how you plan to locate the speakers, TV, and seating? You can post pictures, if you need more posts, there's a post padding thread in the off-topic area.
One thing to look out for, if you want to upgrade speakers at some point, it will mean buying a new receiver also, as this one is specifically made to drive these speakers, and will have difficulty driving speakers with standard impedances, if it will work at all with them. The subwoofer I'm not sure at all about, whether it's powered by it's own amplifier or by the receiver. Same for upgrading the receiver, I'm thinking you will have trouble using these speakers with a regular receiver.
But that doesn't mean you won't enjoy your new toys!