have you ever built flying models before. If not don't build the spitfire yet. There are a lot of little things to learn about building flying models before you want to build something that is as hard to fly as a spitfire without adding in any building mistakes that occur from ignorance. Some newby building problems are not having the wing 90 to fuse and tail surfaces equally spaced from wing tips. makeing sure that the angle of incidence from the wing to the tail surfaces are correct. there are a lot of little things that become more critical in the more advanced faster flying aircraft. the scale planes especially warbirds have high wing loadings that require greater speed to fly and you use the high wing trainers to get confidence and build automatic reactions so you can fly faster planes without thinking about corrections. the trainers are more forgiving of construction mistakes or errors.