i've sailed all the spots listed and i'd lean towards burrum heads.... but need more info really of what the mrs is looking for.
burrum is picteresque, quiet and humble. very relaxing. plenty of houses to rent through elders realty burrum heads.
short walk to the water, clear water and sand beach. (unless it's been raining non stop then the water gets dirty). although most go there for low tide blasting along the 4+ km speed bank i think it is best at high tide.

you could maybe stay in burrum, wife could drive to hervey bay for shopping and you can sail at burrum. it's the type of place where you park the car and walk everywhere.