I do a lot of video work with electric utilities, and have been in on some wind turbine construction. I doubt if the hub is at 1000ft, cause that would be one huge-arse wind turbine. Probably between 200 and 300 ft. As suggested, a boom truck with a bucket is a great help on this type of shoot. Stability is an issue as they tend to bounce with any weight shift. In FCP the “smoothcam” feature can do a decent job of getting rid of the “bucket bounce.” The bucket truck will enable you to get some nice crane shots as you move up or down. Since you will have access to the maintenance guys, I would look at having them rig a lipstick camera (or something small) to the hub, to get another interesting vantage point of the repair work. FYI..There is a cool video of a wind turbine project that went wrong on YouTube..(Waverly, Iowa)
JPD