Tchaikovsky 5 2nd Mvt.

I've decided to start to attempt to write a marching band show, and I wanted the ballad to be Tchaikovsky's 5th 2nd mvt. which is what it ended up being. I think I arranged it pretty well and it fits and could see it as part of a show. I've already started the 1st movement of the show, but I was working on this faster so the 2nd movement comes out faster than the first, lol. I'm thinking of making it very "classical themed" like Crown 2015. Also, PLEASE tell me if my percussion writing(especially battery) is okay, I'm in brassline so I don't really know how those parts work. Thanks in advance!
Hope you enjoy!