Openbox, GPicView, Leafpad, and PCManFM are already on Pdaxii13.  So, the only remaining parts are the LX* components.  It doesn't look lite enough for me on the 64MB Z, but there are others running it.  It looks even heavier than the standard Pdaxii13, which I think is as heavy a desktop as I can tolerate on the Z.  Then again I dropped that for WindowMaker.