You have touched on a controversial subject.
Human beings exposed to sunlight for forty minutes develop over 10,000 IU's of vitamin D3, and some physicians recommend that as the daily dose. The FDA requirement is a fraction of that. Evidence suggests that up to 5000 IU a day cannot get you into any trouble.
Daily exposure to sunlight (at least 30 minutes a day withg as much skin as possible exposed) is the best way to ensure a proper dose of vitamin D3.
Vitamin E can be very dangerous. It intefere with the normal blood clotting mechanism. Some health gurus recommend 3000 IU a day, which, to my way of thinking is playing Russian roulette.
400 IU a day of vitamin E is helpful and a dose for which there are no contraindications, providing you are not on any medications that interfere with clotting..