I always have multiple batteries out there both for the radio and the reciever. In terms of that NEXT plane, well, I'm already working on a scale Fokker Eindecker III (and am thinking about something like a Lucky Stik in the short term). Here are a couple pix of my Eindecker-in-progress.

It started life as a Balsa USA kit now has been modified beyond any recognition -- basically I'm building it from scratch off the Joseph Nieto drawings from the National Aeronautics and Space Museum blown up to the size of the BUSA kit.