Thanks Athos7!
I just thought of laying the thing down on the side, mark it up and cut a slightly longer hole so I could have some "trimming" distance.

I spent a couple of hours in my hobby room tonight, and got the following things done:
- Joined the wing
- Made holes for the servo cable (I cut rough holes first, then use a soldering iron to seal the edges)
- Installed CA hinges on the ailerons and rudder
- Mounted the wooden "dots" to secure the wing to the fuse

I'm now waiting for the wing to cure so I can continue...

I know the Hyde mount/Hattori setup is slightly heavier, but I'm always trying to keep my models as quiet as possible.

The instruction manual shows a rather "sorry" looking fuel tank securing system, so I'll build something new there I guess. The best solution is to keep the tank from touching the fuse, but I'll see what I come up with. It should be light, functional and easy... -Using the KISS principle.