Most of the time, the keels do require a bit of twisting and bending to get them into the desired shape. Soak the pieces in some warm water for a few minutes and it will make them easier to bend without breaking them.
When they dry, it will hold the shape, and be just fine.
X-pinning is good in order you do not split the wood if you are concerned of doing so. Pinning through them is a last resort, but we all do it. Just be careful and use thin pins.
As far as the wing photo goes, where you are pointing to, I would leave it alone. The ribs need to mount on that portion, as shown in the photo.
So far, things are looking pretty good for your first build.
