Thanks for the response!
Just to clarify: My budget is up to $3000. as long as it's a good investment but it doesn't need to be super-fancy. I would think that $1500 or less would do it but I honestly don't have a clue.
The parking lot is more of a strip of angle-in spaces next to the building and adding 1 more camera (pointing the other direction) will cover it completely.
You mentioned a hybrid system? Does that allow wired and wireless cameras? That sounds ideal!