Don't sell that kit! But do put it away and start with something easier. SIG kits are very easy to build, I built a Kadet LT 25, 4 Star, Mid Star and Something Extra with no help but the instructions and they all fly very well.
I have just bought a Balsa USA stick 40 plus which is also easy to build and a good plane to learn on.
Once you start building your own kits there is no turning back, you will be addicted and eventually ready for that big plane of yours.

Ray