The 16-35 will cover both your daytime plus nighttime needs.
If you want you might also consider the Nikon 12-24/2.8, a very good glass.
The canon 14mm while wide is limiting, & you'll prob need another prime to cover all angles, maybe 20/2.8 or 28/1.8. Zoom is more convenient.
Will the 16-35 just be tripod mounted? Ie no motorized tracking
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