Take all the time you need.
I'm not entirely convinced it works on such a small scale. Meaning that with a brief exercise like this you will have more look looking for homogeneity and smooth transition from material to material.
I know what you mean, my original piece (before I looked at your orchestration and also from comments earlier in the thread) was actually much more erratic, there were oboes and clarinets jumping in and out all over the place
