Hi hermster, it looks like you have your head screwed on properly and I think you are doing well.
Living in a country town has its pros and cons and one major con being limited income prospects/growth. Think yours is above the average rural income and your super balance is healthy.
If you are impatient, have you thought about moving to the big smoke for a short period of time and earning the big bucks? Downsides are a-plenty - high rents, social network, more consumerist temptation etc etc
If not and you love your town, here's one suggestion, my DH comes from a small town. Property there is cheap. However, some have been entrepreneurial about it and they have been buying houses to reno and rent it out on AirBNB.
We stayed in one and it was fantastic! The owner had a fridge full of food and goodies for us and his return would be 300-500% the going rate for a weekly rental and just under what the motels would be charging per night. However, the place is always full up for the holidays - school, long weekends, weddings, funerals etc. if your town has a special historic connection, big bonus too. Of course you have the down season but it isn't a bad option to look into.
Other than that, 7 years isn't that far away to suck it up. I would just throw any extra income at that mortgage offset account and beefing up the managed funds.