I have played this piece twice but unfortunately, I do not have a copy of this in my library. The tuba part is prominent but is not difficult. I used my old B&S F both times (this was over ten years ago).
This is (IMO) one of the most imaginative pieces of music that Stravinsky composed. I hope you have a capable Principal horn who has a good sense of rhythm and is willing to wear Depends® for underwear.
-Matt