First of all, wonderful Beethoven choice.
I agree that you should add another alternative style to the program. Grieg would be great, or some Mendelssohn songs without words, or Schubert Impromptus, or Schumann... you have plenty of German music and a taste of impressionistic, there's no Russian though.
I don't know if two Bach P&F sets are necessary... if you want to add more variety, you will likely have to cut somewhere... I would cut a Bach or a Chopin Etude... why randomly perform 10-1 right before 10-4? That's smacking them over the head. Why not put in 10-3 for relaxation's sake?
I'm a big fan of placing a dramatic, tragic piece right before the intermission... get the audience stressed out right before break so they come back wanting something really nice and beautiful. So I would put the ballade before the break. It's a thought. Besides, I would much rather prefer to end the recital listening to the awesome ride of the alborada than to the suicidal ballade.
So if it were me, I would cut a Bach, play Beethoven, then the ballade, break, play 10-1, 10-3, 10-4, 25-5, (maybe cut either 10-1 or 25-5... I just think the 10-3&4 pair is a wonderful duo), slow everything down with something (above suggestions, Debussy even?) and close with the Ravel.