Liszt sonata in B minor.
The Ives sonata is horrendously difficult and requires some very odd technical demands, one such is to play blocks of notes, where by you use a 12 inch (i think) block of wood to create tone clusters. For a recital i wouldn't go near Ives as it seems to abstract to assess you on musical grounds. Although reading your current repertoire i must question whether you could handle such monster works at all? PS: Always Beethoven Op 106, but given your current repertoire i do not think you could handle the 4th movement.