Hey, if you can play 4,5,7,and 8, you should be able to just sightread 1 perfectly well. Probably even 6 too, which I think is a lot easier to grasp than 7 or 8.
soliloquy is right about it being a great piece too. There's a moment in it that truly gives a sense of terror like few pieces can, that climax in the middle or so. I love that ending sonority too - classic Scriabin!