Search the archives, this has been a topic many times before. Tower lights are mainly for show or launch ramp loading situations. They provide too much glare to use even if they were legal which they are not.
Brian Based on your location I would say you are going to ride mostly in CA and AZ. It is an illegal in both states If you go to Lake Mojave, its so dark at nigh that you see better with out them ( I have tried ) I now only use my lights for cleanup and docking.