I would personally stay away from that grill for rehabbing. While they are really cool and capable grills, they are pretty rare and therefore, parts are not easy to come by.
If you really want an older Genesis 1000 with wood slats, just be patient. They are out there in fairly good numbers still. Don't worry about the wood being in good shape as you would likely be replacing it anyway. Also, consider that the later Genesis 1000 grills that used Durawood in place of the real wood are basically the exact same grill aside from the material used for the wood slats. You are going to replace it anyway. Also, the newer Genesis 1000's have the slide rail for the flip table instead of the support rod which is waaaay more convenient to use.