How's everyone?

I'm still a bit new to 3D modeling and right now
I've been planning on modeling a Flying Saucer or UFO with a dozen of circular windows in it.
I find this very difficult since the more windows I put on the saucer the mesh becomes more congested when I smooth it! and it's also very hard to put on a circular window in it.
I've also tried using Boolean/Difference operation but the problem is the end result would not be Quads but it created lots of N-gons on the surface of the saucer, plus there are some tears in certain areas when I used Boolean.
I must say creating a saucer sounds very simple but when it comes to creating windows in it it's very complicated, so the questions is there any less complicated way to model the saucer with windows on it? I want to have a good looking Flying Saucer with a clean look of Quads or Tris in it.

If anyone can help, Thanks!!