One more question about wiring it up, if i may.  I noticed the ipac only has one (two? i can't remember at the moment) place for a ground.  If i'm not daisy chaining them, where would i run all of the ground wires to?  Is there a common solution to this?  It seems like running 23 or so wires to a metal screw would get too crowded to work?  
What to the experts usually do?