I noticed you have a few Einaudi pieces... in the 'new age' genre you may want to explore some Yanni.. ie: Until the last moment, the rain must fall, one mans dream, felitsa, enchantment, etc etc -
it seems most of your rep is very similar in style. Don't know if it's a theme that you're trying to maintain throughout your concert, or what,,, if so, then I can only suggest some Yanni... if you want liven up the mix.. then you can throw in a little Bach Solfeggietto, mozart's turkish march or maybe some of the easier chopin preludes ie: no.4 , raindrops... man, the list can be 100pgs' long.. haha