I started mine as mentioned earlier. I recommend starting with a stripper.
There is a lot of detail to consider and the tops of some of the windows are curved. This is going to be a challenging job for me. I got a base coat on, but have put it on the shelf for a while. I prefer to mask and paint, but my painters tape is too sticky. I need to get a more sensitive version of tape. I had planned to mask the curved windows and trim the tape with an Exacto. I want white window trim. The first time I tried this, I lost paint when removing the tape. I think it was because I didn't strip/prep the metal first.
George