I love the composition! It is as if you took a chunk out of some of my favorite hiking areas and miniaturized it. I can totally imagine my hammock strung between two of those trees.
And it is visual proof that P. cembra is a good 5 needle white pine species, with traits that are fairly similar to Japanese White Pine. Definitely a species to consider if JWP is not available at affordable prices.
Looking at these 3 pictures alone tells me you've been working on this tree for a very long time, indeed . Congratulations and thanks for the inspiration!