I like it.
How about this for an alternate idea?
Full or nearly full moon.
Long glass.
Back away from the main subject (statue) so that the perspective is similar to this
Light pain the main subject or drop in a little fill flash so it's exposed and the moon is exposed (pretty sure the moon won't be affected by the flash

)
I don't have any settings for shorter glass. I shot the "super moon" back in March with an 800 f5.6L IS. Exposure was good at:
ISO 100
1/125s @f5.6
Basically to get a well exposed moon I start by metering on the moon (manual mode), dial the shutter speed down until I see about 2 stops under, shoot, chimp, tweak as needed. I usually tweak with ISO as I want my shutter speed to be reasonably high.