Absolute massive overkill.
You don’t obviously need something like the light you linked, especially only at 700ft.
Nevertheless, the light linked below would be your best bet:
It throws quite far at 900-1000m, and throws out 6000 lumens+ of brightness on turbo mode, so should be plenty to weed out bad people on a wide range at 300m-500m still.
You can get it at 110$US in this link with the coupon specified for the Astrolux MF02S:
If you want something more powerful still, here it is:
The same brightness, but throws the light at over 1500m on turbo! You can get it cheaper by using the coupon code with the light named Astrolux MF04S:
The lights specified above use lithium ion 18650s, and you can order some cells from here:
Get 8x of them so you have a separate set of batteries for the light in case you run out.
And the battery charger: