I set up the survelance at our buisness. We are using the equipment listed below. I am happy with the system. The 2MP cameras will make it much easier for positive ID. We looked at an analog system but you couldn't decipher facial features or license plates.
I would go with IP, 2mp minimum for your needs. the DVR is a big part of the cost for a system like ours and i'm not sure how the Uniden will hold up in the image quality, storage capacity front. I can get a few weeks on two 2TB drives in a raid 1 array at 15fps full resolution.