I have most of the cuts of MDF, all of the drivers, and all of the crossover components. It would be a pain in the *** to ship the mdf, not worth it since its not very precise and still needs a lot of work.
If I end up getting the Klipsch's (or the infinitys), I'd sell the drivers and xover parts for 110 including shipping, to get as much money back as possible. I'll even throw in a free gift*!
*= Gift is junk, but awesome junk
EDIT- Or I could just return the components to parts-express.