I am with Minn and others who think you are clueless and trying something not that easy.

I too saw and replied to your aileron gear setup question mainly suggesting you should keep it simple with building and everything.

And I do remember someone trying to scratch build his first plane from scratch from Australia arround the same time you pooed your aileron question.

Just keep it simple and enjoy.

I am new to this hobby and yes I learned what sheer webs are for with my first kit 4*40 by just twisting the wing before and after installing the webs and how they can provide a good structural support for a open bay wing, like 4*40.

Look at other responses when people learn that you are scratch building a twin for your first plane.

After all decision is yours, if you want to pursue your idea, go ahead. One suggestion though look at Great Planes web site, they have manuals for all their kits in pdf and take a look at all of them, study them, their hints are good. Their warnings and recommendations are good. I learned a lot from those and you can see how many different designs, structures is available.

Also do learn how to fly with a trainer.

Good luck and enjoy,