I don't know how much of a good idea that is: cicadas are better fliers than they are usually given credit for, they will just be back as soon as you leave.
Also you need to take into account the mess an improperly used leafblower (or pressure washer) will do.
You need to give systemic insecticides some thought: a soil drench is the less time-consuming form of control when everything is considered and should kill both the females during the laying cycle and any larva that may emerge. The only downside is careful monitoring is required: systemic insecticides will break down and stop being effective and it's possible cicadas will migrate from neighboring lots. In that case you will need to hit them again.
Dusting is not particularly effective unless you use a good power mister (25ft is not a small fruit tree) and even then you will be using pretty much the same insecticide as in a drench.
