I have a Samsung qx410 which is somewhat similarly built and has a great keyboard but absolutely sucks for linux in the touchpad department. I think you should

I have a Samsung qx410 which is somewhat similarly built and has a great keyboard but absolutely sucks for linux in the touchpad department. I think you should look at thinkpads, even though they might not meet your specifications they usually work much better with linux than other brands and are usually well built.