Warbirds are typically bad choices for second planes. The micros don't really count as they're designed only to resemble warbirds, not fly like 'em. Check out the Banana Hobbies site: http://www.bananahobby.com/

There are numerous styles of electrix there, (including warbirds) for good $$$ and in most cases, all inclusive. Get the spare batteries and upgrade if offered. The main trouble with tail-draggers (warbird or civil) is ground-handling, not flight, especially on lighter weight planes. (Not much trouble on the 42#,124" winged Extra 300, but a pain on the little ones.) If you're confident with regards to ground handling, you should be fine with the Reliant. Truth be known, the bigger they are, the easier they are to fly. (But a lot more expensive if you mess up) If you're competent with a micro, you should have less trouble with something bigger.

http://www.bananahobby.com/1993.html