Good morning N, that wonderful wind shape look will be perfect, especially in your garden with the very large rocks.
Well, I went in a different direction. More subtle, I believe. Here is the tree today, I will let it grow the way it wants for the next few years, before I make any pruning decisions.
This is a picture from mid-May, before I removed additional 75% of the branches. So basically, there is less than 10% of the original branches remaining, and the tree is doing just fine. Japanese maples are quite resilient.