Thank you for the wonderful suggestions Dev.
I have known about combining the percussion staves, but just have not got down to it.
I'm using Allegro and if there is a way to group 7/8 into 2, 2, 3, I am unaware of it.
When I learned theory, I learned about 8/8 as 3+3+2.
What do you mean too much on the percussion? Too long? I don't understand.