Problem with motion detector lights is they give notice to anyone detected that they have been. Even if they are "casual visitors", like kids just looking to do a little healthy vandalism, they are likely to see if they can find a way around the lights.
Unless you have very good coverage, there may be a path to your house that does not trigger the lights. And even if you do have good coverage, unless you respond to each activation by a passing dog or bigger game if it is in your area, the folks interested in your place will observe and determine how you do respond and, trigger the lights, get to a hiding place that won't be sensed that you do not come out and check and have access.
The driveway monitor will inform you of possible intrusion without giving that information to the possible bad guys. The night vision gear will let you ID those involved without their knowledge also.
As kids, my crowd tended to be adventurous...not anything destructive, well, not very much, but we did like tying doorknobs, sticking doorbells and car horns. Any countermeasures just made it a greater challenge. And most of the simple ones can be defeated.