New Rider

I am new to riding. I took the course and did well, bought my first bike a Honda 250 Rebel. Been practicing, now my issue that I need help or advice. My bike seems to small and I want a bigger bike. I am considering a Suzuki c50 as my upgrade. It feels way different than my 250. Is this a good bike to upgrade too, I want something I can ride for a long time, and not get bored. I am plus size and only 5'2 on a good day. I am all about safety and trying to be as careful as possible. I dont speed and I have lots of respect for the bike. Any help would be Great...

Site: her-motorcycle.com