Apologies for taking so long to get to your question. I assume you have found a work around as it has been a while.
Good on you for getting your students to change their profiles.
Did you know you can select the order that speedgrader shows students? Here's a guide for that https://community.canvaslms.com/docs/DOC-13084-415255026
I hope all is well with the rest of your Canvas experience.