I've attempted to install ROS on the Edison and have been continually finding that the Edison quickly runs out of space during the installation. In case anyone has been battling this as well, here are the preparatory steps and documentation for a successful installation and enough free space remaining so you can actually use the system:
At the end of the installation (this time) I ended up with 253MB free on the (rootfs) / file system and 1.1GB free on the /home file system. That's more than enough to work with especially since images, video, LIDAR maps, etc will be on the microsd card and not the local FS in case I need to move data to a different system.
I think that's it for now, but I'll continue to update this post in case there are any changes.
I used a different approach. Instead of Ubilinux I am using the meta-ros layer in Yocto to create my own distribution. Unfortunately it is not indigo yet, but still on hydro. One benefit versus your approach is that no manual management of the disk space is required as only the required files are installed.