HELP! Which of these piano concertos would you recommend?

It is for a concerto competition, competitors are age 16-18 (I am 16)

Saint Saens #2 or 4, Beethoven piano concerto #2, Dvorak piano
concerto, Glazunov piano concerto

I am inclined to do either of the Saint-Saens, but not very sure, I
cannot consult my teacher because he has been unavailable for a long
time.

Any suggestions will be appreciated. Thank you so much~
If you have other suggestions, I would prefer to stay away from the
common ones, just for the sake of variety