Is definitely better if you take them at a place where you will be seeing them, they will be further away from the road, and a little house shelter could be provided. Since you have confirmed they were dumped there with no mother in sight, it will be extremely hard for them to survive, and anyone with bad intentions could take them kick them poison them etc etc etc.
the big cats will definitely chase them away, but if you provide them food, and make sure they eat, daily and watch them i guess they could eventually adapt