We're building a 25.7'x16 addition on to our house with cathedral ceiling. We call it sunroom because it will have lots of windows, with 3 35"x71 windows on the North and South walls (16' wide), the N and S walls will be the standard height, the eastern wall will have a height of 17.8, with a roof pitch of 9/12.

On the wall facing east (25x7) we will have four or five 35x71 windows with 24x17 transoms above and a half circle above the mentioned. All of these will be spaced 12 feet both on top and sides.

Questions:

If we have 5 windows and transoms above them, the half circle lines will not show a continuation of the straight lines; it will, if we have four windows... How will that look with the rest of the walls? Suggestions, coments , please

2. Will these walls provide enough support for the gable roof?

My husband is a great diy, but lacks experience building cathedral ceilings. Any suggestions on framing the roof, catheral ceiling and walls or anything else that I don't know I should ask about?

Thank you for your help