The reason they do the red dots seperately on the decals, is because the crispness and colour registration is better on the roundels if the red is done as an individual decal. 👍
Wow! Quite a big kit to begin with. I've just about finished it now (video soon) but it fits together perfectly. Only tricky bit is the struts for the wings, getting them all lined up at the same time. Engine is also slightly fiddly, but dry fit everything first and it makes sense, several little tabs to line up. It's taken me ages cos other things got in the way. Best of luck and enjoy!