Locate a bee keeper in the area and have them come get the hive.
Yep, way too many bees for you to do it yourself.
Plus the location (height) is a big complication, may try the sheriffs office, many have a list of beekeepers for swarm removal. What county is this in? If am am close enough, I'd take a look.
BTW, living as they are and in good numbers, makes them likely great bees since they have proven they can survive the new threats bees face now, they would be great stock to have in an apiary as long as they arent Africanized.