I'm working on designing a similar system myself. I thought the N700 was slated for mid-September release, but it doesn't appear to be out yet. My other option is a pico-ITX board if the N700 doesn't fit, but I like the N700 because of the 1.5ghz processor and 2gb RAM capabilities. I'm planning on going with a conventional 2.5" HDD, rather than the SSD or CF simply because of greater capacity. I'm working on some measurements right now to determine the maximum case size I can have to fit in the stock 2-din space to maintain a factory appearance. Then I'll input it all into AutoCAD and whip up a design before I get started. I'll probably be going with the 629gl 7" touchscreen. I would love to find a 5-6" touchscreen simply out of space concerns, but I haven't seen anything. Good luck with your build.