It's quite a simple (low parts count) kit, is reasonably detailed & mostly goes together OK, but...;
The fuselage comprises the nose & a cylindrical forward section, which is then joined to the wing by two parts (3&4 I think) for the blended rear section of the fuselage. The nose & forward cylinder are fine, but the two rear parts don't fit so well. When trying to fit them you will be battling between getting them to match the forward cylinder, fit at the wing roots & at the tail.
I would strongly suggest doing a good bit of dry fitting before deciding how to join it all up. I ended joining it all up & accepting that there would be a fair bit of filling at the wing roots (not as noticable as at the fuselage joint).