Thank you very much for your comments, I don't really have much room to change the orchestration, since it was meant to be played with my siblings. I don't know if I would be confortable writing for flute, oboe and strings, wouldn't it make to many solo instruments in comparaison with the accompaniment? The heavy mid register may also be due to the fact that the violon isn't really given the opportunity to use its higher register, I will keep you remark in mind for the remaning movement to be written (the second one).