Mountains / routes with which I am familiar that match your level of difficulty and should be safe to climb solo - note that some might require ice ax and crampons depending on the time of year and snow conditions.
http://www.summitpost.org/mountain/rock ... ihorn.html
Reeti only - getting to Simelihorn requires climbing UIAA II
http://www.summitpost.org/mountain/rock ... rhorn.html
http://www.summitpost.org/mountain/rock ... nhorn.html
http://www.summitpost.org/mountain/rock ... wald-.html