OMG, this is refreshing and quite awesome of you! Here are some great issues:
X-Men #188-193 “Supernovas”
Uncanny X-Men #172-173 “Wolverine and Rogue in Japan
Uncanny X-Men #171 “Welcome to the X-Men, Rogue…Hope You Survive the Experience!”
Uncanny X-Men #235-238 “First Genosha Storyline”
And Uncanny X-Men #218, is my favorite Rogue issue of all time. Hope you enjoy these.