Sounds great! One thing to keep in mind. The bioballs accumulate nitrates, which may be a factor later. I'm not trying to discourage you, but I figured I would share what many already know about the wet/dry setup.
Wet/dry does have its advantage though. After research on this site, Lando pointed out that you can use reef rubble in place of the bio balls for a more natural filtration (fully submerged). I found some online from Walt Smith 40lbs. for $39.00.
The choice is yours, but I wanted to give you a heads up just in case.
What size wet/dry did you get?