I agree with Ragwing.

Nigel is a nice guy, and sellsl some great designs. In my opinion, they require a little more building experience than the OP possesses.

The Sig 1/4 Cubs and the two Spacewalkers will help bridge that gap. The step by step, photo illustrated instructions make the build painless.

I would keep the Kinner Sportster in mind, but build it after some more experience is gained.