How critical is night time recording and or identifying faces, license plates and is your budget unlimited? You may want to check out some varifocal/ptz cams. Generally, people here recommend Hikvision, but if night time is important for you then don't bother with their 3MP/4MP budget cams for this type of coverage in the parking lot. If you want to stay on the budget then I recommend to look at Huisun Mini PTZ, but since it's only 2MP for that large of area it may not provide enough detail.