well, your defenatly not ahead at this point, but you are representing a very big hand and that all in makes it very hard for him to call, meaning you will probaly take this one down a lot. He could have an over pair (probably)or 2 pair (unlikly) so, even if he does call you have 11 outs (assuming that if you hit another 9 you are good) so i think that it is a ballsy but a good strong play assuming that you do have a good table immage.