Well, this is embarassing... I just found out that Scizor can learn Acrobatics by TM. I thought it was just Scyther kind of like Roost.
So I can use my own Scizor that I already have.
The plan was to get a Scyther as I don't have my Scizor UT.
Oh well, sorry about that. I'll tell you if there's anything else I need so you can get one of the Arceuses in the future.