I have built and lost three Speedy Bees - they are fantastic flying AC!
IF you understand their limits. []

I bought one second hand - it couldn't get off of the ground until I burned off half of a tank of fuel. [:@]

Once I moved the servos forward and recovered it with lighter material it was great! (know the maximum weight that it can lift)

I powered them with an OS .20 - too much power!! I snapped the dowel on one and had the wing depart from the fuse. [&o] The next bee had a larger dowel, this time I had the horizontal stab (1/8" balsa) develop flutter, it snapped off. [X(]

Keep your power within design limits, beef up key points as you see fit, watch your weight and you will had lots of fun with a Bee!