Well yes considering millions of pianists have learnt and performed them they are very much possible to learn. I think anyone that has a grade 8 ABRSM diploma already has the prerequisite skills to learn these pieces. I don't know how old you are but if you plan on playing the piano for the rest of your life know this: you're not always going to have a teacher to tell you what to do and play, so might as well learn to make your own decisions now. Get the sheet music for the listed works you want to try out, sit at the piano, and try it out! If after a week or so you think you can't handle it then drop it and move on. Your hands won't fall off because you decided to experiment with a piece you weren't ready for. Be daring, be adventerous, and don't be scared of music.
Good luck.