The Powerslot/EBC combo sounds good, especially for towing.
Stay away from ebay unless you know the source is top quality, you don't want cheap brakes parts trying to slow down your Libery and cargo in tow. Many inexpensive Brembo slotted/drilled rotors are actually just Brembo blanks that a shop has machined and most are not drilled properly and and often crack. That's not a chance I'm willing to take.
_________________
Chad
L.O.S.T.#000305
'03 Limited 4x4 Bright Silver Metalic
http://www.cardomain.com/ride/496132
Lots of factory options, a couple of aftermarket things,
a big ol'car seat in the middle.