NOW, I'm REALLY wrestling with the notion of selling my plane. Turns out that the insurance on a tail wheel Maule is nine-fold (you read that correctly!) what we pay for our 150s. Insurance on a trike Maule is still five-fold what we pay. That really leaves only a 172 as a viable option. And flying a 172 is about as much fun as watching the Detroit Lions play football. But they do at least have a significantly larger useful load which would definitely accommodate my labs.
Have you checked the price of insurance on the 172?
With a value about double of the 150, and double the seating capacity (liability is in part based on no. of seats) you will probably find the 172's insurance about three or four fold the price of the 150 insurance.
Charles