Lol ok I thought you where going to present them all!

I should have read closely what you said before!
I thought you should have the Chopin no matter what you choose (because its a wonderful piece), then choose out of the 3 groups. If you have your heart set on the Schumann then I would choose: Schumann, Chopin Liszt, Ravel. If you want to neglect the Ravel then: Schumann Bach Rach Chopin (I know it's longer than 1 hour tho)
But to have a 1 hour recital the Schumann eats up way to much time, its like 30+ minutes. I would do the Schumann for the 1st half, let the people have an interval or break, then do the next half, because even for me listening to that piece is a marathon. Id like to see: Bach,Rach Chopin Liszt, Ravel.