Hello,
I am not an expert in this, but we have a cladding with diamond-shaped Douglas fir battens on our house and have therefore dealt with the topic a bit and also consulted with our carpenter. However, only a small plinth is plastered for us, as the basement is practically completely below ground.
1. On houses where, like yours, there is wooden cladding at the top and plaster at the bottom, there must, as far as I can see, be a separation of the two surfaces by a slightly protruding piece of metal so that the water running down the wooden facade from above does not reach the facade below, otherwise it would cause streaks and stains there.
2. I would consider cladding the whole house; it is the most maintenance-friendly. It also offers many advantages when it comes to laying cables for lighting or attaching all kinds of other things.
3. If you want to achieve the most uniform appearance or weathering of the facade possible, plan for as little roof overhang as possible or none at all. Also, make sure the window sills have as little overhang as possible, significantly less than required; I think we have only 2-3 cm beyond the wood.
4. With such textured plasters, dirt accumulates in the surface over time and then no longer looks nice, especially with very light colors, of course.
5. The cheapest option is to plaster and paint the entire house in the standard way. Wooden cladding is more expensive.
It is best to get advice from the carpentry/house builder and look at some completed examples in housing developments or older buildings.
Best regards
Oli