I am installing a vertical 2" Flaux Blind on my arch window. There are 2 windows under the arch as shown in the photo, so I am looking at options. There is no header support due to the arch and the opening is 55" wide.

Option 1 - According to the blind manufacturer if I go with 2.5" slats they are a lot lighter and I can just use end brackets.

Option 2 - I could cut a 2x3 and use it as a header support. I show a picture of that. I would paint the 2x3 white to match the window.

With option 2 I could either go with 2 blinds so each window had its own blind or a single long blind.

So I guess my first question is should I just have a single blind that covers both windows or 2 separate blinds and if I just go with a single blind should I use the header to give center support or just the end brackets.