its always better to over provide documents than under provide. without supporting documentation, how will they know that you are eligible for what you are applying for?No, I didn't. That because they didn't request any other document.
you have to upload your spouses study permit, and letter from school that proves that she is registered full time for the semester/year.
additional documents you should provide is bank statements that prove that you can take care of yourself, a resume and an employment letter from your current employer, your education certificates and things you have back home that can convince them of your return to your home country.