ᐅ Pergolux 4-post structure, wall-mounted, water drainage away from the facade

Hello everyone,

I am currently planning my Pergolux, 4m x 5m (13 ft x 16 ft). Since I have an awning on three sides and we are limited by the maximum height in front of the roller shutter box, we decided on a 4-post version. (Wall mounting was not possible)

I have three questions.
1. I want to place the Pergolux directly against the facade. Is it possible to rotate the base plate? If I assemble it in the standard way, the two vertical posts (on the wall side) would stand 4cm (1.5 inches) away from the wall.
2. I want to install a wall closure profile that directs rainwater from the wall directly to the Pergolux's gutter. Do you have any recommendations?
3. Between the Pergolux and the facade, I want to install a waterproof swelling tape. Do you have any recommendations?

Thanks and best regards