Not an easy answer but they normally follow the river, my call would be Corso, Rome Sth, Astolat or Instow (there are many more near the O's). If you want away from the river precinct, Ellesmere, Violet, Lily, Rhyndarra and more of the O's, I hope this helps
Depending on your budget and your preference you are spoilt for choice in Yeronga. The Brisbane Corso, as well as a few other riverside streets such as Esplanade, Astolat St, Instow Street, Rome Street South, are all great choices. Rhyndarra (heritage-listed residence) is set in a beautiful estate also on the river- Heritage and Riverview Place include newer prestige homes built around the old Military Hospital. Many of the 'O' Streets are named after ships and passenger liners from the early 1900's This River precinct is very popular.