1 hour recital,i no intermission.Well i would advice some to play not bach but rather C.p.e Bach (for a change),1 sonata of scarlati, op 10 no 2 sonata of beethoven,2-3 chopin etudes, a romantic piece (either liszt,schuman,brahms,etc or maybe rachmaninov),and for close play some debussy preludes.As an encore play a waltz of chopin or something from rachmaninov again (2 preludes maybe).It may not be an hour exactly,but it is good if there is no intermission.
Now if you donot want hackeyend pieces.You can try to play various arragementes of minute waltz of chopin (Listen to sorabji's version and you will feel crazy!!),or play something like Leo ornstein,or some alkan etudes for piano,trust me.Sometimes people would love to hear something different.Other than that it all depends on your personal piano skill