"DING"

MinnFlyer, Chiming in

I was also going to suggest the Rapture. It's a good build - challenging without being too difficult.

The Skybolt is a very challenging build, but GP's manual does an excellent job of guiding you through it. It would be an excellent step toward building a Corsair but you may want one more build between the Rapture and the Skybolt... I would suggest an Ultra Sport!