Best thing to do is...Buy Daniel Galvin Colour Corrector,you may need 2 depending on the length of your hair.This will bring your hair up 1-2 shades lighter and not as much peroxide!
Why not try one of those wash in/wash out temporary colours first? That way if you don't like it, a few washes later and your hair is 'back to normal.' Besides if you try dying, bleaching and then re-colouring your hair too soon after each other you could end up with a strange and badly damage your hair to boot!!!