Steve, how is your project going? Do you have a baseline?
If you do raise the fridge and add an extra fan, then maybe wire it so spins only when the compressor is on. Otherwise it will be wasting electricity on moving air when not needed (though in your climate the compressor is most likey on more than off). Adding extra insulation never hurts, you can start in hard to see places, like the back or top, maybe a side. Also, is there enough room above the coils to add insulation between them and the bottom of the fridge? Something like thin styrofoam with a layer of aluminum foil. Maybe replace the light with LEDs. Normal lightbulbs add 20-40 watts of heat when on.
And one more piece of advice, though you probably know this already: try not to open the door too often.
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