JRSB

Hello everyone!
Im doing composition as elective for school and currently using Sibelius.
However I have difficulty getting the right note values using trial and error and I can never seem to get the effect I want, like col legno.
The instruments also sound sterile, like something out of Final Fantasy.

What software would be more suitable and would I benefit from a midi keyboard?

KThnxbye.

edit: I need to be able to print score