Long sleeves for practice on the ground are good to have. Sun can be strong, so Sun's cream is a good choice.
For flying is good to have a windstopper jacket and if you have light gloves, take them. If you have your own helmet, bring it. Sunglasses are preferable to have due to wind and Sun.
If you have high shoes or boots, bring them. It is good to protect your ankles while we practice. Not obligatory.
If you have GoPro or camera, you can bring it.
You will not need a car, so don't rent. It is a waste of money.