Hi,
I'm no great composer but I've just sat down and listened to two versions of Beethoven's Fifth. The first was the original; it sticks to one key,C, throughout ,I think. The second is a modern 'Disco' version entitled 'A Fifth Of Beethoven'; I don't know why, but it has more key jumps than I've ever come across before.
As with the previous replies, if it sounds right to you, for want of a better phrase, publish and be pround of your work.
Regards,
Lucy