Nicely done Jeff.
For nose weight, I 'dry fit' the fuselage and wings before building, taping them together, then balance the model on my fingertips at the wing tips. Pieces of lead are then tacked to the nose, using 'Plasticine', until the nose drops dramatically. This gives an idea of how much weight will be needed, and I then use the Formula 'P', where 'P' = Plenty, and add around 20% more weight when the time comes to fit it into place.