Bill, I hate to tell you this but you ARE supposed to wait until the Challenge officially starts to build the model for that Challenge. This one starts on November 15, 1009 and runs to October 31, 2010. So relax, cool your jets for the next two weeks.
(Come to think of it have you thought of enlarging any of the Guillow's Jets? I was thinking of building the Comet P-59 two or three times it's normal size as a towline glider.}
I didn't know when it began, but that one's just for practice. I'm going to do all the 500's and see what works the best...
I have the F-15 in stock here, and plan to blow it up 4 times... I think... yeah that'll give oit a 48 inch wing span... Be about 90 inches long or so...