Congradulations!
These are excellent speakers. I have heard them more than once. The low end is effected by placement, so if you find them lacking in low end, work on placement. Speakers are incredibly sensitive to placement, particularly bass and lots of patience can have a big effect.
Also, remember to get one hundred hours or more before starting to access what they sound like. No matter how much you know this, and folks remind you, once you have put out this much money your mind is racing to find validation. It is really hard not to jump the gun.
Enjoy, you have purchased some world class speakers.