hey Paul, some good progress, time for pics mate!

As for the glue, you have the right idea, careful if it is on the top, the cap is very thin.
As for the knot, they are part and parcel of timber, there are a few options - live with it, highlight it or hide it. Staining it might prove to be difficult, and typically knots are darker and denser. Depends a bit on where it is, and with most things in our builds, only we notice the minor flaws (or even consider them flaws...)
Post up a pic, the collective brains trust will offer some solutions