Re: ATC interview
I got asked the three-plane question at mine, years ago. A 747, an ATP and a Cessna 172 - what order would you put them in and why.
747 then ATP then 172 works best for speed purposes (fastest first, slowest last).
Unfortunately, 172 then ATP then 747 works best from a wake vortex point of view!
Whichever way, explain your thinking.
As to the second thing I'd guess you've already ticked off high ground, populated areas, concentrations of birds (where do they gather?), things that cause fog etc.
Best of luck!