I am scheduled for 12/12 installation of Genie and 2 minis. I assume the tech would automatically be inclined to go wireless off my router with main Genie. But, how would I have him do it hard-wired to main Genie? I have an Ethernet cable ready in place to go to from router to where Genie will be. Is there any reason why I should choose wireless over hard wired? I am thinking of going hard-wired to main Genie and minis picking it up via wireless. How should that be done?