Catalac's don't have mast rake and I suspect that if you put any in you will need a new main. The mast does require a slight bend in it though of a few inches, and this is created by the inner forestay. I'm not to sure on the tensions for the rigg…
https://nestawayboats.com/outboards/
Don't come very often as I'm a user of ybw.com forums. But the owner of Nestaway Boats is very knowledgeable of electric outboards and will hopefully give good advice. He has so far on ybw forums !
Having a 9m I can't really help but if you obtain lengths, I would not use them to obtain made up rigging without finishing on site. Whilst the Catalacs all look the same they are all slightly different, including mine.
New windows are expensive. I had some made for my wheel house and the quotes were all roughly the same, around £1100. If the aluminium frames are good and just the leaks coming from between glass and frame they can normally be rebuilt and the glas…