Version of Ubuntu and ROS for NXT and Turtlebot2

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I am working on a configuration for my fall AI/Robotics undergraduate course. I would like to find the best version of Ubuntu and ROS for use on both NXT and Turtlebot2. Here is my problem:

Currently I am testing Ubunto 12.04 (Precise) with ROS Hydro. I think this will work fine with Turtlebot, both on the bot and the workstation. But I also want to use Lego Mindstorm NXT to get the students started. It looks like ROSNXT needs ROS Electric, but ROS Electric will not run on Ubunto 12.04.

So, it looks like I might have to go back to Ubunto 10.04 (Lucid) and ROS Electric to get support for ROS NXT, but Turtlebot2 is not supported in ROS Electric (you need Groovy)

So, I don't see a single configuration that supports ROS NXT and Turtlebot 2... Does that seem correct?

   -- I could upgrade to Lego Mindstorm EV3 for the fall, if ROS Hydro will support it by September...?  
   -- Should I try building ROS NXT from source under Hydro, but this looks like it has challenges
   -- Is it possible to run ROS Hydro under Ubuntu 10.04? It does not look like it

Any suggestions?