Hi Leland,
Everything starts with a good idea, and you just got started. It seems to me that only communicating about this, makes you write more cheerfully. You are writing "LOL". Did you know that the english "LOL" is actually a Dutch word meaning "fun"?
I like Carla Burke's idea for the small pond. That would really add something to the total idea. This afternoon I made a quick sketch with a spiral around a small circular pond. You can add a small "beach" of pebbles or seashells in front of it.
I have googled "plants for evening scent" and found this:
https://youtu.be/rkIAunU_0Wo?si=HjVukrMFD2cJJNVJ
Most of these plants are not hardy in my climate. However, I will plant them on my balcony in pots. Than I can bring them in for winter.
For my garden, which is not at my home, I will figure out something perennial suitable for my climate. I already have some white flowers and cyclamen with sylvery patterns on their leaves (and a wildlife pond).
You really inspired me with the moon garden. I had never heard of it. I am definitely going to watch some video's. Last night the moon was full and I was seriously impressed by the amount of light! Normally I sleep at night, but now I know there is really something to enjoy. Thank you for your inspiration!
Leland, whatever you do, just get started and start enjoy the process. I wish you lots of "lol"