Airshow Photograph

I'm going to RIAT this year, which will be my first airshow, but I need some help with the gear I'm going to use. I will be using a nikon d5100, and I already have a nikon 55-300mm lens, but I was planning on renting a lens for the day instead. I need some help with what lens to rent as I don't know which focal length will be best, and I have been trying to look for lenses with fast autofocus. I'm am open to any third-party lenses as I just want to be able to take the best shots. TIA