Newest Piece

An Overture is one way to describe it. There are so many instruments... do you need them all? Try reducing the amount of instruments needed as a project; see what's the status quo for this piece (minimum amount of instruments that doesn't hinder the effect of sound). I'm not sure if you have connections with a full orchestra + concert band but getting an ensemble to play this would be quite a bit of work. Perhaps even a smaller scale version for only concert band or a smaller group of instruments would give you a better chance of getting your composition played. 

Hope these suggestions helped in some way (sorry couldn't comment too much on the actual piece as I'm only good with chamber works)!

Hmm, could you post the full score as a pdf?