The time that this project is going to take all depends on what kind of driveway you have.
Each driveway requires a different approach as some driveways will be easier to work with than others.
If you are able to go with one of the more simple options like running the wire across the top of your driveway or using an existing seam, the process should take anywhere from minutes to 1 hour.
Though, if you have to go with a more difficult option like cutting the seam yourself with a saw, it can take anywhere from 1-2 hours in total.
The time range varies widely depending on how long it takes you to get tools and if you have prior experience using them.